Removed vendorized packages.

45 files changed, 0 insertions, 11532 deletions

diff --git a/tablib/packages/__init__.py b/tablib/packages/__init__.py
deleted file mode 100644
index a38d74d..0000000
--- a/tablib/packages/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-all = ['simplejson', 'typecheck', 'xlwt', 'opster']
\ No newline at end of file
diff --git a/tablib/packages/opster.py b/tablib/packages/opster.py
deleted file mode 100644
index 5fe64be..0000000
--- a/tablib/packages/opster.py
+++ /dev/null
@@ -1,612 +0,0 @@
-# (c) Alexander Solovyov, 2009, under terms of the new BSD License
-'''Command line arguments parser
-'''
-
-import sys, traceback, getopt, types, textwrap, inspect, os
-from itertools import imap
-
-__all__ = ['command', 'dispatch']
-__version__ = '0.9.10'
-__author__ = 'Alexander Solovyov'
-__email__ = 'piranha@piranha.org.ua'
-
-write = sys.stdout.write
-err = sys.stderr.write
-
-CMDTABLE = {}
-
-# --------
-# Public interface
-# --------
-
-def command(options=None, usage=None, name=None, shortlist=False, hide=False):
-    '''Decorator to mark function to be used for command line processing.
-
-    All arguments are optional:
-
-     - ``options``: options in format described in docs. If not supplied,
-       will be determined from function.
-     - ``usage``: usage string for function, replaces ``%name`` with name
-       of program or subcommand. In case if it's subcommand and ``%name``
-       is not present, usage is prepended by ``name``
-     - ``name``: used for multiple subcommands. Defaults to wrapped
-       function name
-     - ``shortlist``: if command should be included in shortlist. Used
-       only with multiple subcommands
-     - ``hide``: if command should be hidden from help listing. Used only
-       with multiple subcommands, overrides ``shortlist``
-    '''
-    def wrapper(func):
-        try:
-            options_ = list(guess_options(func))
-        except TypeError:
-            options_ = []
-        try:
-            options_ = options_ + list(options)
-        except TypeError:
-            pass
-
-        name_ = name or func.__name__.replace('_', '-')
-        if usage is None:
-            usage_ = guess_usage(func, options_)
-        else:
-            usage_ = usage
-        prefix = hide and '~' or (shortlist and '^' or '')
-        CMDTABLE[prefix + name_] = (func, options_, usage_)
-
-        def help_func(name=None):
-            return help_cmd(func, replace_name(usage_, sysname()), options_)
-
-        @wraps(func)
-        def inner(*args, **opts):
-            # look if we need to add 'help' option
-            try:
-                (True for option in reversed(options_)
-                 if option[1] == 'help').next()
-            except StopIteration:
-                options_.append(('h', 'help', False, 'show help'))
-
-            argv = opts.pop('argv', sys.argv[1:])
-            if opts.pop('help', False):
-                return help_func()
-
-            if args or opts:
-                # no catcher here because this is call from Python
-                return call_cmd_regular(func, options_)(*args, **opts)
-
-            try:
-                opts, args = catcher(lambda: parse(argv, options_), help_func)
-            except Abort:
-                return -1
-
-            try:
-                if opts.pop('help', False):
-                    return help_func()
-                return catcher(lambda: call_cmd(name_, func)(*args, **opts),
-                               help_func)
-            except Abort:
-                return -1
-
-        return inner
-    return wrapper
-
-
-def dispatch(args=None, cmdtable=None, globaloptions=None,
-             middleware=lambda x: x):
-    '''Dispatch command arguments based on subcommands.
-
-    - ``args``: list of arguments, default: ``sys.argv[1:]``
-    - ``cmdtable``: dict of commands in format described below.
-      If not supplied, will use functions decorated with ``@command``.
-    - ``globaloptions``: list of options which are applied to all
-      commands, will contain ``--help`` option at least.
-    - ``middleware``: global decorator for all commands.
-
-    cmdtable format description::
-
-      {'name': (function, options, usage)}
-
-    - ``name`` is the name used on command-line. Can contain aliases
-      (separate them with ``|``), pointer to a fact that this command
-      should be displayed in short help (start name with ``^``), or to
-      a fact that this command should be hidden (start name with ``~``)
-    - ``function`` is the actual callable
-    - ``options`` is options list in format described in docs
-    - ``usage`` is the short string of usage
-    '''
-    args = args or sys.argv[1:]
-    cmdtable = cmdtable or CMDTABLE
-
-    globaloptions = globaloptions or []
-    globaloptions.append(('h', 'help', False, 'display help'))
-
-    cmdtable['help'] = (help_(cmdtable, globaloptions), [], '[TOPIC]')
-    help_func = cmdtable['help'][0]
-
-    autocomplete(cmdtable, args)
-
-    try:
-        name, func, args, kwargs = catcher(
-            lambda: _dispatch(args, cmdtable, globaloptions),
-            help_func)
-        return catcher(
-            lambda: call_cmd(name, middleware(func))(*args, **kwargs),
-            help_func)
-    except Abort:
-        return -1
-
-# --------
-# Help
-# --------
-
-def help_(cmdtable, globalopts):
-    def help_inner(name=None):
-        '''Show help for a given help topic or a help overview
-
-        With no arguments, print a list of commands with short help messages.
-
-        Given a command name, print help for that command.
-        '''
-        def helplist():
-            hlp = {}
-            # determine if any command is marked for shortlist
-            shortlist = (name == 'shortlist' and
-                         any(imap(lambda x: x.startswith('^'), cmdtable)))
-
-            for cmd, info in cmdtable.items():
-                if cmd.startswith('~'):
-                    continue # do not display hidden commands
-                if shortlist and not cmd.startswith('^'):
-                    continue # short help contains only marked commands
-                cmd = cmd.lstrip('^~')
-                doc = info[0].__doc__ or '(no help text available)'
-                hlp[cmd] = doc.splitlines()[0].rstrip()
-
-            hlplist = sorted(hlp)
-            maxlen = max(map(len, hlplist))
-
-            write('usage: %s <command> [options]\n' % sysname())
-            write('\ncommands:\n\n')
-            for cmd in hlplist:
-                doc = hlp[cmd]
-                if False: # verbose?
-                    write(' %s:\n     %s\n' % (cmd.replace('|', ', '), doc))
-                else:
-                    write(' %-*s  %s\n' % (maxlen, cmd.split('|', 1)[0],
-                                              doc))
-
-        if not cmdtable:
-            return err('No commands specified!\n')
-
-        if not name or name == 'shortlist':
-            return helplist()
-
-        aliases, (cmd, options, usage) = findcmd(name, cmdtable)
-        return help_cmd(cmd,
-                        replace_name(usage, sysname() + ' ' + aliases[0]),
-                        options + globalopts)
-    return help_inner
-
-def help_cmd(func, usage, options):
-    '''show help for given command
-
-    - ``func``: function to generate help for (``func.__doc__`` is taken)
-    - ``usage``: usage string
-    - ``options``: options in usual format
-
-    >>> def test(*args, **opts):
-    ...     """that's a test command
-    ...
-    ...        you can do nothing with this command"""
-    ...     pass
-    >>> opts = [('l', 'listen', 'localhost',
-    ...          'ip to listen on'),
-    ...         ('p', 'port', 8000,
-    ...          'port to listen on'),
-    ...         ('d', 'daemonize', False,
-    ...          'daemonize process'),
-    ...         ('', 'pid-file', '',
-    ...          'name of file to write process ID to')]
-    >>> help_cmd(test, 'test [-l HOST] [NAME]', opts)
-    test [-l HOST] [NAME]
-    <BLANKLINE>
-    that's a test command
-    <BLANKLINE>
-           you can do nothing with this command
-    <BLANKLINE>
-    options:
-    <BLANKLINE>
-     -l --listen     ip to listen on (default: localhost)
-     -p --port       port to listen on (default: 8000)
-     -d --daemonize  daemonize process
-        --pid-file   name of file to write process ID to
-    <BLANKLINE>
-    '''
-    write(usage + '\n')
-    doc = func.__doc__
-    if not doc:
-        doc = '(no help text available)'
-    write('\n' + doc.strip() + '\n\n')
-    if options:
-        write(''.join(help_options(options)))
-
-def help_options(options):
-    yield 'options:\n\n'
-    output = []
-    for short, name, default, desc in options:
-        if hasattr(default, '__call__'):
-            default = default(None)
-        default = default and ' (default: %s)' % default or ''
-        output.append(('%2s%s' % (short and '-%s' % short,
-                                  name and ' --%s' % name),
-                       '%s%s' % (desc, default)))
-
-    opts_len = max([len(first) for first, second in output if second] or [0])
-    for first, second in output:
-        if second:
-            # wrap description at 78 chars
-            second = textwrap.wrap(second, width=(78 - opts_len - 3))
-            pad = '\n' + ' ' * (opts_len + 3)
-            yield ' %-*s  %s\n' % (opts_len, first, pad.join(second))
-        else:
-            yield '%s\n' % first
-
-
-# --------
-# Options parsing
-# --------
-
-def parse(args, options):
-    '''
-    >>> opts = [('l', 'listen', 'localhost',
-    ...          'ip to listen on'),
-    ...         ('p', 'port', 8000,
-    ...          'port to listen on'),
-    ...         ('d', 'daemonize', False,
-    ...          'daemonize process'),
-    ...         ('', 'pid-file', '',
-    ...          'name of file to write process ID to')]
-    >>> print parse(['-l', '0.0.0.0', '--pi', 'test', 'all'], opts)
-    ({'pid_file': 'test', 'daemonize': False, 'port': 8000, 'listen': '0.0.0.0'}, ['all'])
-
-    '''
-    argmap, defmap, state = {}, {}, {}
-    shortlist, namelist, funlist = '', [], []
-
-    for short, name, default, comment in options:
-        if short and len(short) != 1:
-            raise FOError('Short option should be only a single'
-                          ' character: %s' % short)
-        if not name:
-            raise FOError(
-                'Long name should be defined for every option')
-        # change name to match Python styling
-        pyname = name.replace('-', '_')
-        argmap['-' + short] = argmap['--' + name] = pyname
-        defmap[pyname] = default
-
-        # copy defaults to state
-        if isinstance(default, list):
-            state[pyname] = default[:]
-        elif hasattr(default, '__call__'):
-            funlist.append(pyname)
-            state[pyname] = None
-        else:
-            state[pyname] = default
-
-        # getopt wants indication that it takes a parameter
-        if not (default is None or default is True or default is False):
-            if short: short += ':'
-            if name: name += '='
-        if short:
-            shortlist += short
-        if name:
-            namelist.append(name)
-
-    opts, args = getopt.gnu_getopt(args, shortlist, namelist)
-
-    # transfer result to state
-    for opt, val in opts:
-        name = argmap[opt]
-        t = type(defmap[name])
-        if t is types.FunctionType:
-            del funlist[funlist.index(name)]
-            state[name] = defmap[name](val)
-        elif t is types.ListType:
-            state[name].append(val)
-        elif t in (types.NoneType, types.BooleanType):
-            state[name] = not defmap[name]
-        else:
-            state[name] = t(val)
-
-    for name in funlist:
-        state[name] = defmap[name](None)
-
-    return state, args
-# --------
-# Subcommand system
-# --------
-
-def _dispatch(args, cmdtable, globalopts):
-    cmd, func, args, options = cmdparse(args, cmdtable, globalopts)
-
-    if options.pop('help', False):
-        return 'help', cmdtable['help'][0], [cmd], {}
-    elif not cmd:
-        return 'help', cmdtable['help'][0], ['shortlist'], {}
-
-    return cmd, func, args, options
-
-def cmdparse(args, cmdtable, globalopts):
-    # command is the first non-option
-    cmd = None
-    for arg in args:
-        if not arg.startswith('-'):
-            cmd = arg
-            break
-
-    if cmd:
-        args.pop(args.index(cmd))
-
-        aliases, info = findcmd(cmd, cmdtable)
-        cmd = aliases[0]
-        possibleopts = list(info[1])
-    else:
-        possibleopts = []
-
-    possibleopts.extend(globalopts)
-
-    try:
-        options, args = parse(args, possibleopts)
-    except getopt.GetoptError, e:
-        raise ParseError(cmd, e)
-
-    return (cmd, cmd and info[0] or None, args, options)
-
-def aliases_(cmdtable_key):
-    return cmdtable_key.lstrip("^~").split("|")
-
-def findpossible(cmd, table):
-    """
-    Return cmd -> (aliases, command table entry)
-    for each matching command.
-    """
-    choice = {}
-    for e in table.keys():
-        aliases = aliases_(e)
-        found = None
-        if cmd in aliases:
-            found = cmd
-        else:
-            for a in aliases:
-                if a.startswith(cmd):
-                    found = a
-                    break
-        if found is not None:
-            choice[found] = (aliases, table[e])
-
-    return choice
-
-def findcmd(cmd, table):
-    """Return (aliases, command table entry) for command string."""
-    choice = findpossible(cmd, table)
-
-    if cmd in choice:
-        return choice[cmd]
-
-    if len(choice) > 1:
-        clist = choice.keys()
-        clist.sort()
-        raise AmbiguousCommand(cmd, clist)
-
-    if choice:
-        return choice.values()[0]
-
-    raise UnknownCommand(cmd)
-
-# --------
-# Helpers
-# --------
-
-def guess_options(func):
-    args, varargs, varkw, defaults = inspect.getargspec(func)
-    for name, option in zip(args[-len(defaults):], defaults):
-        try:
-            sname, default, hlp = option
-            yield (sname, name.replace('_', '-'), default, hlp)
-        except TypeError:
-            pass
-
-def guess_usage(func, options):
-    usage = '%name '
-    if options:
-        usage += '[OPTIONS] '
-    args, varargs = inspect.getargspec(func)[:2]
-    argnum = len(args) - len(options)
-    if argnum > 0:
-        usage += args[0].upper()
-        if argnum > 1:
-            usage += 'S'
-    elif varargs:
-        usage += '[%s]' % varargs.upper()
-    return usage
-
-def catcher(target, help_func):
-    '''Catches all exceptions and prints human-readable information on them
-    '''
-    try:
-        return target()
-    except UnknownCommand, e:
-        err("unknown command: '%s'\n" % e)
-    except AmbiguousCommand, e:
-        err("command '%s' is ambiguous:\n    %s\n" %
-            (e.args[0], ' '.join(e.args[1])))
-    except ParseError, e:
-        err('%s: %s\n' % (e.args[0], e.args[1]))
-        help_func(e.args[0])
-    except getopt.GetoptError, e:
-        err('error: %s\n' % e)
-        help_func()
-    except FOError, e:
-        err('%s\n' % e)
-    except KeyboardInterrupt:
-        err('interrupted!\n')
-    except SystemExit:
-        raise
-    except:
-        err('unknown exception encountered')
-        raise
-
-    raise Abort
-
-def call_cmd(name, func):
-    def inner(*args, **kwargs):
-        try:
-            return func(*args, **kwargs)
-        except TypeError:
-            if len(traceback.extract_tb(sys.exc_info()[2])) == 1:
-                raise ParseError(name, "invalid arguments")
-            raise
-    return inner
-
-def call_cmd_regular(func, opts):
-    def inner(*args, **kwargs):
-        funcargs, _, varkw, defaults = inspect.getargspec(func)
-        if len(args) > len(funcargs):
-            raise TypeError('You have supplied more positional arguments'
-                            ' than applicable')
-
-        funckwargs = dict((lname.replace('-', '_'), default)
-                          for _, lname, default, _ in opts)
-        if 'help' not in (defaults or ()) and not varkw:
-            funckwargs.pop('help', None)
-        funckwargs.update(kwargs)
-        return func(*args, **funckwargs)
-    return inner
-
-def replace_name(usage, name):
-    if '%name' in usage:
-        return usage.replace('%name', name, 1)
-    return name + ' ' + usage
-
-def sysname():
-    name = sys.argv[0]
-    if name.startswith('./'):
-        return name[2:]
-    return name
-
-try:
-    from functools import wraps
-except ImportError:
-    def wraps(wrapped, assigned=('__module__', '__name__', '__doc__'),
-              updated=('__dict__',)):
-        def inner(wrapper):
-            for attr in assigned:
-                setattr(wrapper, attr, getattr(wrapped, attr))
-            for attr in updated:
-                getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
-            return wrapper
-        return inner
-
-# --------
-# Autocomplete system
-# --------
-
-# Borrowed from PIP
-def autocomplete(cmdtable, args):
-    """Command and option completion.
-
-    Enable by sourcing one of the completion shell scripts (bash or zsh).
-    """
-
-    # Don't complete if user hasn't sourced bash_completion file.
-    if not os.environ.has_key('OPSTER_AUTO_COMPLETE'):
-        return
-    cwords = os.environ['COMP_WORDS'].split()[1:]
-    cword = int(os.environ['COMP_CWORD'])
-
-    try:
-        current = cwords[cword-1]
-    except IndexError:
-        current = ''
-
-    commands = []
-    for k in cmdtable.keys():
-        commands += aliases_(k)
-
-    # command
-    if cword == 1:
-        print ' '.join(filter(lambda x: x.startswith(current), commands))
-
-    # command options
-    elif cwords[0] in commands:
-        options = []
-        aliases, (cmd, opts, usage) = findcmd(cwords[0], cmdtable)
-        for (short, long, default, help) in opts:
-            options.append('-%s'  % short)
-            options.append('--%s' % long)
-
-        options = [o for o in options if o.startswith(current)]
-        print ' '.join(filter(lambda x: x.startswith(current), options))
-
-    sys.exit(1)
-
-
-COMPLETIONS = {
-    'bash':
-        """
-# opster bash completion start
-_opster_completion()
-{
-    COMPREPLY=( $( COMP_WORDS="${COMP_WORDS[*]}" \\
-                   COMP_CWORD=$COMP_CWORD \\
-                   OPSTER_AUTO_COMPLETE=1 $1 ) )
-}
-complete -o default -F _opster_completion %s
-# opster bash completion end
-""",
-    'zsh':
-            """
-# opster zsh completion start
-function _opster_completion {
-  local words cword
-  read -Ac words
-  read -cn cword
-  reply=( $( COMP_WORDS="$words[*]" \\
-             COMP_CWORD=$(( cword-1 )) \\
-             OPSTER_AUTO_COMPLETE=1 $words[1] ) )
-}
-compctl -K _opster_completion %s
-# opster zsh completion end
-"""
-    }
-
-@command(name='_completion', hide=True)
-def completion(type=('t', 'bash', 'Completion type (bash or zsh)')):
-    """Outputs completion script for bash or zsh."""
-
-    prog_name = os.path.split(sys.argv[0])[1]
-    print COMPLETIONS[type] % prog_name
-
-# --------
-# Exceptions
-# --------
-
-# Command exceptions
-class CommandException(Exception):
-    'Base class for command exceptions'
-
-class AmbiguousCommand(CommandException):
-    'Raised if command is ambiguous'
-
-class UnknownCommand(CommandException):
-    'Raised if command is unknown'
-
-class ParseError(CommandException):
-    'Raised on error in command line parsing'
-
-class Abort(CommandException):
-    'Abort execution'
-
-class FOError(CommandException):
-    'Raised on trouble with opster configuration'
diff --git a/tablib/packages/simplejson/__init__.py b/tablib/packages/simplejson/__init__.py
deleted file mode 100644
index dcfd541..0000000
--- a/tablib/packages/simplejson/__init__.py
+++ /dev/null
@@ -1,437 +0,0 @@
-r"""JSON (JavaScript Object Notation) <http://json.org> is a subset of
-JavaScript syntax (ECMA-262 3rd edition) used as a lightweight data
-interchange format.
-
-:mod:`simplejson` exposes an API familiar to users of the standard library
-:mod:`marshal` and :mod:`pickle` modules. It is the externally maintained
-version of the :mod:`json` library contained in Python 2.6, but maintains
-compatibility with Python 2.4 and Python 2.5 and (currently) has
-significant performance advantages, even without using the optional C
-extension for speedups.
-
-Encoding basic Python object hierarchies::
-
-    >>> import simplejson as json
-    >>> json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])
-    '["foo", {"bar": ["baz", null, 1.0, 2]}]'
-    >>> print json.dumps("\"foo\bar")
-    "\"foo\bar"
-    >>> print json.dumps(u'\u1234')
-    "\u1234"
-    >>> print json.dumps('\\')
-    "\\"
-    >>> print json.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True)
-    {"a": 0, "b": 0, "c": 0}
-    >>> from StringIO import StringIO
-    >>> io = StringIO()
-    >>> json.dump(['streaming API'], io)
-    >>> io.getvalue()
-    '["streaming API"]'
-
-Compact encoding::
-
-    >>> import simplejson as json
-    >>> json.dumps([1,2,3,{'4': 5, '6': 7}], separators=(',',':'))
-    '[1,2,3,{"4":5,"6":7}]'
-
-Pretty printing::
-
-    >>> import simplejson as json
-    >>> s = json.dumps({'4': 5, '6': 7}, sort_keys=True, indent='    ')
-    >>> print '\n'.join([l.rstrip() for l in  s.splitlines()])
-    {
-        "4": 5,
-        "6": 7
-    }
-
-Decoding JSON::
-
-    >>> import simplejson as json
-    >>> obj = [u'foo', {u'bar': [u'baz', None, 1.0, 2]}]
-    >>> json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]') == obj
-    True
-    >>> json.loads('"\\"foo\\bar"') == u'"foo\x08ar'
-    True
-    >>> from StringIO import StringIO
-    >>> io = StringIO('["streaming API"]')
-    >>> json.load(io)[0] == 'streaming API'
-    True
-
-Specializing JSON object decoding::
-
-    >>> import simplejson as json
-    >>> def as_complex(dct):
-    ...     if '__complex__' in dct:
-    ...         return complex(dct['real'], dct['imag'])
-    ...     return dct
-    ...
-    >>> json.loads('{"__complex__": true, "real": 1, "imag": 2}',
-    ...     object_hook=as_complex)
-    (1+2j)
-    >>> from decimal import Decimal
-    >>> json.loads('1.1', parse_float=Decimal) == Decimal('1.1')
-    True
-
-Specializing JSON object encoding::
-
-    >>> import simplejson as json
-    >>> def encode_complex(obj):
-    ...     if isinstance(obj, complex):
-    ...         return [obj.real, obj.imag]
-    ...     raise TypeError(repr(o) + " is not JSON serializable")
-    ...
-    >>> json.dumps(2 + 1j, default=encode_complex)
-    '[2.0, 1.0]'
-    >>> json.JSONEncoder(default=encode_complex).encode(2 + 1j)
-    '[2.0, 1.0]'
-    >>> ''.join(json.JSONEncoder(default=encode_complex).iterencode(2 + 1j))
-    '[2.0, 1.0]'
-
-
-Using simplejson.tool from the shell to validate and pretty-print::
-
-    $ echo '{"json":"obj"}' | python -m simplejson.tool
-    {
-        "json": "obj"
-    }
-    $ echo '{ 1.2:3.4}' | python -m simplejson.tool
-    Expecting property name: line 1 column 2 (char 2)
-"""
-__version__ = '2.1.1'
-__all__ = [
-    'dump', 'dumps', 'load', 'loads',
-    'JSONDecoder', 'JSONDecodeError', 'JSONEncoder',
-    'OrderedDict',
-]
-
-__author__ = 'Bob Ippolito <bob@redivi.com>'
-
-from decimal import Decimal
-
-from decoder import JSONDecoder, JSONDecodeError
-from encoder import JSONEncoder
-def _import_OrderedDict():
-    import collections
-    try:
-        return collections.OrderedDict
-    except AttributeError:
-        import ordered_dict
-        return ordered_dict.OrderedDict
-OrderedDict = _import_OrderedDict()
-
-def _import_c_make_encoder():
-    try:
-        from simplejson._speedups import make_encoder
-        return make_encoder
-    except ImportError:
-        return None
-
-_default_encoder = JSONEncoder(
-    skipkeys=False,
-    ensure_ascii=True,
-    check_circular=True,
-    allow_nan=True,
-    indent=None,
-    separators=None,
-    encoding='utf-8',
-    default=None,
-    use_decimal=False,
-)
-
-def dump(obj, fp, skipkeys=False, ensure_ascii=True, check_circular=True,
-        allow_nan=True, cls=None, indent=None, separators=None,
-        encoding='utf-8', default=None, use_decimal=False, **kw):
-    """Serialize ``obj`` as a JSON formatted stream to ``fp`` (a
-    ``.write()``-supporting file-like object).
-
-    If ``skipkeys`` is true then ``dict`` keys that are not basic types
-    (``str``, ``unicode``, ``int``, ``long``, ``float``, ``bool``, ``None``)
-    will be skipped instead of raising a ``TypeError``.
-
-    If ``ensure_ascii`` is false, then the some chunks written to ``fp``
-    may be ``unicode`` instances, subject to normal Python ``str`` to
-    ``unicode`` coercion rules. Unless ``fp.write()`` explicitly
-    understands ``unicode`` (as in ``codecs.getwriter()``) this is likely
-    to cause an error.
-
-    If ``check_circular`` is false, then the circular reference check
-    for container types will be skipped and a circular reference will
-    result in an ``OverflowError`` (or worse).
-
-    If ``allow_nan`` is false, then it will be a ``ValueError`` to
-    serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``)
-    in strict compliance of the JSON specification, instead of using the
-    JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``).
-
-    If *indent* is a string, then JSON array elements and object members
-    will be pretty-printed with a newline followed by that string repeated
-    for each level of nesting. ``None`` (the default) selects the most compact
-    representation without any newlines. For backwards compatibility with
-    versions of simplejson earlier than 2.1.0, an integer is also accepted
-    and is converted to a string with that many spaces.
-
-    If ``separators`` is an ``(item_separator, dict_separator)`` tuple
-    then it will be used instead of the default ``(', ', ': ')`` separators.
-    ``(',', ':')`` is the most compact JSON representation.
-
-    ``encoding`` is the character encoding for str instances, default is UTF-8.
-
-    ``default(obj)`` is a function that should return a serializable version
-    of obj or raise TypeError. The default simply raises TypeError.
-
-    If *use_decimal* is true (default: ``False``) then decimal.Decimal
-    will be natively serialized to JSON with full precision.
-
-    To use a custom ``JSONEncoder`` subclass (e.g. one that overrides the
-    ``.default()`` method to serialize additional types), specify it with
-    the ``cls`` kwarg.
-
-    """
-    # cached encoder
-    if (not skipkeys and ensure_ascii and
-        check_circular and allow_nan and
-        cls is None and indent is None and separators is None and
-        encoding == 'utf-8' and default is None and not kw):
-        iterable = _default_encoder.iterencode(obj)
-    else:
-        if cls is None:
-            cls = JSONEncoder
-        iterable = cls(skipkeys=skipkeys, ensure_ascii=ensure_ascii,
-            check_circular=check_circular, allow_nan=allow_nan, indent=indent,
-            separators=separators, encoding=encoding,
-            default=default, use_decimal=use_decimal, **kw).iterencode(obj)
-    # could accelerate with writelines in some versions of Python, at
-    # a debuggability cost
-    for chunk in iterable:
-        fp.write(chunk)
-
-
-def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True,
-        allow_nan=True, cls=None, indent=None, separators=None,
-        encoding='utf-8', default=None, use_decimal=False, **kw):
-    """Serialize ``obj`` to a JSON formatted ``str``.
-
-    If ``skipkeys`` is false then ``dict`` keys that are not basic types
-    (``str``, ``unicode``, ``int``, ``long``, ``float``, ``bool``, ``None``)
-    will be skipped instead of raising a ``TypeError``.
-
-    If ``ensure_ascii`` is false, then the return value will be a
-    ``unicode`` instance subject to normal Python ``str`` to ``unicode``
-    coercion rules instead of being escaped to an ASCII ``str``.
-
-    If ``check_circular`` is false, then the circular reference check
-    for container types will be skipped and a circular reference will
-    result in an ``OverflowError`` (or worse).
-
-    If ``allow_nan`` is false, then it will be a ``ValueError`` to
-    serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``) in
-    strict compliance of the JSON specification, instead of using the
-    JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``).
-
-    If ``indent`` is a string, then JSON array elements and object members
-    will be pretty-printed with a newline followed by that string repeated
-    for each level of nesting. ``None`` (the default) selects the most compact
-    representation without any newlines. For backwards compatibility with
-    versions of simplejson earlier than 2.1.0, an integer is also accepted
-    and is converted to a string with that many spaces.
-
-    If ``separators`` is an ``(item_separator, dict_separator)`` tuple
-    then it will be used instead of the default ``(', ', ': ')`` separators.
-    ``(',', ':')`` is the most compact JSON representation.
-
-    ``encoding`` is the character encoding for str instances, default is UTF-8.
-
-    ``default(obj)`` is a function that should return a serializable version
-    of obj or raise TypeError. The default simply raises TypeError.
-
-    If *use_decimal* is true (default: ``False``) then decimal.Decimal
-    will be natively serialized to JSON with full precision.
-
-    To use a custom ``JSONEncoder`` subclass (e.g. one that overrides the
-    ``.default()`` method to serialize additional types), specify it with
-    the ``cls`` kwarg.
-
-    """
-    # cached encoder
-    if (not skipkeys and ensure_ascii and
-        check_circular and allow_nan and
-        cls is None and indent is None and separators is None and
-        encoding == 'utf-8' and default is None and not use_decimal
-        and not kw):
-        return _default_encoder.encode(obj)
-    if cls is None:
-        cls = JSONEncoder
-    return cls(
-        skipkeys=skipkeys, ensure_ascii=ensure_ascii,
-        check_circular=check_circular, allow_nan=allow_nan, indent=indent,
-        separators=separators, encoding=encoding, default=default,
-        use_decimal=use_decimal, **kw).encode(obj)
-
-
-_default_decoder = JSONDecoder(encoding=None, object_hook=None,
-                               object_pairs_hook=None)
-
-
-def load(fp, encoding=None, cls=None, object_hook=None, parse_float=None,
-        parse_int=None, parse_constant=None, object_pairs_hook=None,
-        use_decimal=False, **kw):
-    """Deserialize ``fp`` (a ``.read()``-supporting file-like object containing
-    a JSON document) to a Python object.
-
-    *encoding* determines the encoding used to interpret any
-    :class:`str` objects decoded by this instance (``'utf-8'`` by
-    default).  It has no effect when decoding :class:`unicode` objects.
-
-    Note that currently only encodings that are a superset of ASCII work,
-    strings of other encodings should be passed in as :class:`unicode`.
-
-    *object_hook*, if specified, will be called with the result of every
-    JSON object decoded and its return value will be used in place of the
-    given :class:`dict`.  This can be used to provide custom
-    deserializations (e.g. to support JSON-RPC class hinting).
-
-    *object_pairs_hook* is an optional function that will be called with
-    the result of any object literal decode with an ordered list of pairs.
-    The return value of *object_pairs_hook* will be used instead of the
-    :class:`dict`.  This feature can be used to implement custom decoders
-    that rely on the order that the key and value pairs are decoded (for
-    example, :func:`collections.OrderedDict` will remember the order of
-    insertion). If *object_hook* is also defined, the *object_pairs_hook*
-    takes priority.
-
-    *parse_float*, if specified, will be called with the string of every
-    JSON float to be decoded.  By default, this is equivalent to
-    ``float(num_str)``. This can be used to use another datatype or parser
-    for JSON floats (e.g. :class:`decimal.Decimal`).
-
-    *parse_int*, if specified, will be called with the string of every
-    JSON int to be decoded.  By default, this is equivalent to
-    ``int(num_str)``.  This can be used to use another datatype or parser
-    for JSON integers (e.g. :class:`float`).
-
-    *parse_constant*, if specified, will be called with one of the
-    following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.  This
-    can be used to raise an exception if invalid JSON numbers are
-    encountered.
-
-    If *use_decimal* is true (default: ``False``) then it implies
-    parse_float=decimal.Decimal for parity with ``dump``.
-
-    To use a custom ``JSONDecoder`` subclass, specify it with the ``cls``
-    kwarg.
-
-    """
-    return loads(fp.read(),
-        encoding=encoding, cls=cls, object_hook=object_hook,
-        parse_float=parse_float, parse_int=parse_int,
-        parse_constant=parse_constant, object_pairs_hook=object_pairs_hook,
-        use_decimal=use_decimal, **kw)
-
-
-def loads(s, encoding=None, cls=None, object_hook=None, parse_float=None,
-        parse_int=None, parse_constant=None, object_pairs_hook=None,
-        use_decimal=False, **kw):
-    """Deserialize ``s`` (a ``str`` or ``unicode`` instance containing a JSON
-    document) to a Python object.
-
-    *encoding* determines the encoding used to interpret any
-    :class:`str` objects decoded by this instance (``'utf-8'`` by
-    default).  It has no effect when decoding :class:`unicode` objects.
-
-    Note that currently only encodings that are a superset of ASCII work,
-    strings of other encodings should be passed in as :class:`unicode`.
-
-    *object_hook*, if specified, will be called with the result of every
-    JSON object decoded and its return value will be used in place of the
-    given :class:`dict`.  This can be used to provide custom
-    deserializations (e.g. to support JSON-RPC class hinting).
-
-    *object_pairs_hook* is an optional function that will be called with
-    the result of any object literal decode with an ordered list of pairs.
-    The return value of *object_pairs_hook* will be used instead of the
-    :class:`dict`.  This feature can be used to implement custom decoders
-    that rely on the order that the key and value pairs are decoded (for
-    example, :func:`collections.OrderedDict` will remember the order of
-    insertion). If *object_hook* is also defined, the *object_pairs_hook*
-    takes priority.
-
-    *parse_float*, if specified, will be called with the string of every
-    JSON float to be decoded.  By default, this is equivalent to
-    ``float(num_str)``. This can be used to use another datatype or parser
-    for JSON floats (e.g. :class:`decimal.Decimal`).
-
-    *parse_int*, if specified, will be called with the string of every
-    JSON int to be decoded.  By default, this is equivalent to
-    ``int(num_str)``.  This can be used to use another datatype or parser
-    for JSON integers (e.g. :class:`float`).
-
-    *parse_constant*, if specified, will be called with one of the
-    following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.  This
-    can be used to raise an exception if invalid JSON numbers are
-    encountered.
-
-    If *use_decimal* is true (default: ``False``) then it implies
-    parse_float=decimal.Decimal for parity with ``dump``.
-
-    To use a custom ``JSONDecoder`` subclass, specify it with the ``cls``
-    kwarg.
-
-    """
-    if (cls is None and encoding is None and object_hook is None and
-            parse_int is None and parse_float is None and
-            parse_constant is None and object_pairs_hook is None
-            and not use_decimal and not kw):
-        return _default_decoder.decode(s)
-    if cls is None:
-        cls = JSONDecoder
-    if object_hook is not None:
-        kw['object_hook'] = object_hook
-    if object_pairs_hook is not None:
-        kw['object_pairs_hook'] = object_pairs_hook
-    if parse_float is not None:
-        kw['parse_float'] = parse_float
-    if parse_int is not None:
-        kw['parse_int'] = parse_int
-    if parse_constant is not None:
-        kw['parse_constant'] = parse_constant
-    if use_decimal:
-        if parse_float is not None:
-            raise TypeError("use_decimal=True implies parse_float=Decimal")
-        kw['parse_float'] = Decimal
-    return cls(encoding=encoding, **kw).decode(s)
-
-
-def _toggle_speedups(enabled):
-    import simplejson.decoder as dec
-    import simplejson.encoder as enc
-    import simplejson.scanner as scan
-    c_make_encoder = _import_c_make_encoder()
-    if enabled:
-        dec.scanstring = dec.c_scanstring or dec.py_scanstring
-        enc.c_make_encoder = c_make_encoder
-        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or 
-            enc.py_encode_basestring_ascii)
-        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
-    else:
-        dec.scanstring = dec.py_scanstring
-        enc.c_make_encoder = None
-        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
-        scan.make_scanner = scan.py_make_scanner
-    dec.make_scanner = scan.make_scanner
-    global _default_decoder
-    _default_decoder = JSONDecoder(
-        encoding=None,
-        object_hook=None,
-        object_pairs_hook=None,
-    )
-    global _default_encoder
-    _default_encoder = JSONEncoder(
-       skipkeys=False,
-       ensure_ascii=True,
-       check_circular=True,
-       allow_nan=True,
-       indent=None,
-       separators=None,
-       encoding='utf-8',
-       default=None,
-   )
diff --git a/tablib/packages/simplejson/_speedups.c b/tablib/packages/simplejson/_speedups.c
deleted file mode 100644
index b06ba50..0000000
--- a/tablib/packages/simplejson/_speedups.c
+++ /dev/null
@@ -1,2561 +0,0 @@
-#include "Python.h"
-#include "structmember.h"
-#if PY_VERSION_HEX < 0x02070000 && !defined(PyOS_string_to_double)
-#define PyOS_string_to_double json_PyOS_string_to_double
-static double
-json_PyOS_string_to_double(const char *s, char **endptr, PyObject *overflow_exception);
-static double
-json_PyOS_string_to_double(const char *s, char **endptr, PyObject *overflow_exception) {
-    double x;
-    assert(endptr == NULL);
-    assert(overflow_exception == NULL);
-    PyFPE_START_PROTECT("json_PyOS_string_to_double", return -1.0;)
-    x = PyOS_ascii_atof(s);
-    PyFPE_END_PROTECT(x)
-    return x;
-}
-#endif
-#if PY_VERSION_HEX < 0x02060000 && !defined(Py_TYPE)
-#define Py_TYPE(ob)     (((PyObject*)(ob))->ob_type)
-#endif
-#if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
-typedef int Py_ssize_t;
-#define PY_SSIZE_T_MAX INT_MAX
-#define PY_SSIZE_T_MIN INT_MIN
-#define PyInt_FromSsize_t PyInt_FromLong
-#define PyInt_AsSsize_t PyInt_AsLong
-#endif
-#ifndef Py_IS_FINITE
-#define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X))
-#endif
-
-#ifdef __GNUC__
-#define UNUSED __attribute__((__unused__))
-#else
-#define UNUSED
-#endif
-
-#define DEFAULT_ENCODING "utf-8"
-
-#define PyScanner_Check(op) PyObject_TypeCheck(op, &PyScannerType)
-#define PyScanner_CheckExact(op) (Py_TYPE(op) == &PyScannerType)
-#define PyEncoder_Check(op) PyObject_TypeCheck(op, &PyEncoderType)
-#define PyEncoder_CheckExact(op) (Py_TYPE(op) == &PyEncoderType)
-#define Decimal_Check(op) (PyObject_TypeCheck(op, DecimalTypePtr))
-
-static PyTypeObject PyScannerType;
-static PyTypeObject PyEncoderType;
-static PyTypeObject *DecimalTypePtr;
-
-typedef struct _PyScannerObject {
-    PyObject_HEAD
-    PyObject *encoding;
-    PyObject *strict;
-    PyObject *object_hook;
-    PyObject *pairs_hook;
-    PyObject *parse_float;
-    PyObject *parse_int;
-    PyObject *parse_constant;
-    PyObject *memo;
-} PyScannerObject;
-
-static PyMemberDef scanner_members[] = {
-    {"encoding", T_OBJECT, offsetof(PyScannerObject, encoding), READONLY, "encoding"},
-    {"strict", T_OBJECT, offsetof(PyScannerObject, strict), READONLY, "strict"},
-    {"object_hook", T_OBJECT, offsetof(PyScannerObject, object_hook), READONLY, "object_hook"},
-    {"object_pairs_hook", T_OBJECT, offsetof(PyScannerObject, pairs_hook), READONLY, "object_pairs_hook"},
-    {"parse_float", T_OBJECT, offsetof(PyScannerObject, parse_float), READONLY, "parse_float"},
-    {"parse_int", T_OBJECT, offsetof(PyScannerObject, parse_int), READONLY, "parse_int"},
-    {"parse_constant", T_OBJECT, offsetof(PyScannerObject, parse_constant), READONLY, "parse_constant"},
-    {NULL}
-};
-
-typedef struct _PyEncoderObject {
-    PyObject_HEAD
-    PyObject *markers;
-    PyObject *defaultfn;
-    PyObject *encoder;
-    PyObject *indent;
-    PyObject *key_separator;
-    PyObject *item_separator;
-    PyObject *sort_keys;
-    PyObject *skipkeys;
-    PyObject *key_memo;
-    int fast_encode;
-    int allow_nan;
-    int use_decimal;
-} PyEncoderObject;
-
-static PyMemberDef encoder_members[] = {
-    {"markers", T_OBJECT, offsetof(PyEncoderObject, markers), READONLY, "markers"},
-    {"default", T_OBJECT, offsetof(PyEncoderObject, defaultfn), READONLY, "default"},
-    {"encoder", T_OBJECT, offsetof(PyEncoderObject, encoder), READONLY, "encoder"},
-    {"indent", T_OBJECT, offsetof(PyEncoderObject, indent), READONLY, "indent"},
-    {"key_separator", T_OBJECT, offsetof(PyEncoderObject, key_separator), READONLY, "key_separator"},
-    {"item_separator", T_OBJECT, offsetof(PyEncoderObject, item_separator), READONLY, "item_separator"},
-    {"sort_keys", T_OBJECT, offsetof(PyEncoderObject, sort_keys), READONLY, "sort_keys"},
-    {"skipkeys", T_OBJECT, offsetof(PyEncoderObject, skipkeys), READONLY, "skipkeys"},
-    {"key_memo", T_OBJECT, offsetof(PyEncoderObject, key_memo), READONLY, "key_memo"},
-    {NULL}
-};
-
-static Py_ssize_t
-ascii_escape_char(Py_UNICODE c, char *output, Py_ssize_t chars);
-static PyObject *
-ascii_escape_unicode(PyObject *pystr);
-static PyObject *
-ascii_escape_str(PyObject *pystr);
-static PyObject *
-py_encode_basestring_ascii(PyObject* self UNUSED, PyObject *pystr);
-void init_speedups(void);
-static PyObject *
-scan_once_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr);
-static PyObject *
-scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr);
-static PyObject *
-_build_rval_index_tuple(PyObject *rval, Py_ssize_t idx);
-static PyObject *
-scanner_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
-static int
-scanner_init(PyObject *self, PyObject *args, PyObject *kwds);
-static void
-scanner_dealloc(PyObject *self);
-static int
-scanner_clear(PyObject *self);
-static PyObject *
-encoder_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
-static int
-encoder_init(PyObject *self, PyObject *args, PyObject *kwds);
-static void
-encoder_dealloc(PyObject *self);
-static int
-encoder_clear(PyObject *self);
-static int
-encoder_listencode_list(PyEncoderObject *s, PyObject *rval, PyObject *seq, Py_ssize_t indent_level);
-static int
-encoder_listencode_obj(PyEncoderObject *s, PyObject *rval, PyObject *obj, Py_ssize_t indent_level);
-static int
-encoder_listencode_dict(PyEncoderObject *s, PyObject *rval, PyObject *dct, Py_ssize_t indent_level);
-static PyObject *
-_encoded_const(PyObject *obj);
-static void
-raise_errmsg(char *msg, PyObject *s, Py_ssize_t end);
-static PyObject *
-encoder_encode_string(PyEncoderObject *s, PyObject *obj);
-static int
-_convertPyInt_AsSsize_t(PyObject *o, Py_ssize_t *size_ptr);
-static PyObject *
-_convertPyInt_FromSsize_t(Py_ssize_t *size_ptr);
-static PyObject *
-encoder_encode_float(PyEncoderObject *s, PyObject *obj);
-
-#define S_CHAR(c) (c >= ' ' && c <= '~' && c != '\\' && c != '"')
-#define IS_WHITESPACE(c) (((c) == ' ') || ((c) == '\t') || ((c) == '\n') || ((c) == '\r'))
-
-#define MIN_EXPANSION 6
-#ifdef Py_UNICODE_WIDE
-#define MAX_EXPANSION (2 * MIN_EXPANSION)
-#else
-#define MAX_EXPANSION MIN_EXPANSION
-#endif
-
-static int
-_convertPyInt_AsSsize_t(PyObject *o, Py_ssize_t *size_ptr)
-{
-    /* PyObject to Py_ssize_t converter */
-    *size_ptr = PyInt_AsSsize_t(o);
-    if (*size_ptr == -1 && PyErr_Occurred())
-        return 0;
-    return 1;
-}
-
-static PyObject *
-_convertPyInt_FromSsize_t(Py_ssize_t *size_ptr)
-{
-    /* Py_ssize_t to PyObject converter */
-    return PyInt_FromSsize_t(*size_ptr);
-}
-
-static Py_ssize_t
-ascii_escape_char(Py_UNICODE c, char *output, Py_ssize_t chars)
-{
-    /* Escape unicode code point c to ASCII escape sequences
-    in char *output. output must have at least 12 bytes unused to
-    accommodate an escaped surrogate pair "\uXXXX\uXXXX" */
-    output[chars++] = '\\';
-    switch (c) {
-        case '\\': output[chars++] = (char)c; break;
-        case '"': output[chars++] = (char)c; break;
-        case '\b': output[chars++] = 'b'; break;
-        case '\f': output[chars++] = 'f'; break;
-        case '\n': output[chars++] = 'n'; break;
-        case '\r': output[chars++] = 'r'; break;
-        case '\t': output[chars++] = 't'; break;
-        default:
-#ifdef Py_UNICODE_WIDE
-            if (c >= 0x10000) {
-                /* UTF-16 surrogate pair */
-                Py_UNICODE v = c - 0x10000;
-                c = 0xd800 | ((v >> 10) & 0x3ff);
-                output[chars++] = 'u';
-                output[chars++] = "0123456789abcdef"[(c >> 12) & 0xf];
-                output[chars++] = "0123456789abcdef"[(c >>  8) & 0xf];
-                output[chars++] = "0123456789abcdef"[(c >>  4) & 0xf];
-                output[chars++] = "0123456789abcdef"[(c      ) & 0xf];
-                c = 0xdc00 | (v & 0x3ff);
-                output[chars++] = '\\';
-            }
-#endif
-            output[chars++] = 'u';
-            output[chars++] = "0123456789abcdef"[(c >> 12) & 0xf];
-            output[chars++] = "0123456789abcdef"[(c >>  8) & 0xf];
-            output[chars++] = "0123456789abcdef"[(c >>  4) & 0xf];
-            output[chars++] = "0123456789abcdef"[(c      ) & 0xf];
-    }
-    return chars;
-}
-
-static PyObject *
-ascii_escape_unicode(PyObject *pystr)
-{
-    /* Take a PyUnicode pystr and return a new ASCII-only escaped PyString */
-    Py_ssize_t i;
-    Py_ssize_t input_chars;
-    Py_ssize_t output_size;
-    Py_ssize_t max_output_size;
-    Py_ssize_t chars;
-    PyObject *rval;
-    char *output;
-    Py_UNICODE *input_unicode;
-
-    input_chars = PyUnicode_GET_SIZE(pystr);
-    input_unicode = PyUnicode_AS_UNICODE(pystr);
-
-    /* One char input can be up to 6 chars output, estimate 4 of these */
-    output_size = 2 + (MIN_EXPANSION * 4) + input_chars;
-    max_output_size = 2 + (input_chars * MAX_EXPANSION);
-    rval = PyString_FromStringAndSize(NULL, output_size);
-    if (rval == NULL) {
-        return NULL;
-    }
-    output = PyString_AS_STRING(rval);
-    chars = 0;
-    output[chars++] = '"';
-    for (i = 0; i < input_chars; i++) {
-        Py_UNICODE c = input_unicode[i];
-        if (S_CHAR(c)) {
-            output[chars++] = (char)c;
-        }
-        else {
-            chars = ascii_escape_char(c, output, chars);
-        }
-        if (output_size - chars < (1 + MAX_EXPANSION)) {
-            /* There's more than four, so let's resize by a lot */
-            Py_ssize_t new_output_size = output_size * 2;
-            /* This is an upper bound */
-            if (new_output_size > max_output_size) {
-                new_output_size = max_output_size;
-            }
-            /* Make sure that the output size changed before resizing */
-            if (new_output_size != output_size) {
-                output_size = new_output_size;
-                if (_PyString_Resize(&rval, output_size) == -1) {
-                    return NULL;
-                }
-                output = PyString_AS_STRING(rval);
-            }
-        }
-    }
-    output[chars++] = '"';
-    if (_PyString_Resize(&rval, chars) == -1) {
-        return NULL;
-    }
-    return rval;
-}
-
-static PyObject *
-ascii_escape_str(PyObject *pystr)
-{
-    /* Take a PyString pystr and return a new ASCII-only escaped PyString */
-    Py_ssize_t i;
-    Py_ssize_t input_chars;
-    Py_ssize_t output_size;
-    Py_ssize_t chars;
-    PyObject *rval;
-    char *output;
-    char *input_str;
-
-    input_chars = PyString_GET_SIZE(pystr);
-    input_str = PyString_AS_STRING(pystr);
-
-    /* Fast path for a string that's already ASCII */
-    for (i = 0; i < input_chars; i++) {
-        Py_UNICODE c = (Py_UNICODE)(unsigned char)input_str[i];
-        if (!S_CHAR(c)) {
-            /* If we have to escape something, scan the string for unicode */
-            Py_ssize_t j;
-            for (j = i; j < input_chars; j++) {
-                c = (Py_UNICODE)(unsigned char)input_str[j];
-                if (c > 0x7f) {
-                    /* We hit a non-ASCII character, bail to unicode mode */
-                    PyObject *uni;
-                    uni = PyUnicode_DecodeUTF8(input_str, input_chars, "strict");
-                    if (uni == NULL) {
-                        return NULL;
-                    }
-                    rval = ascii_escape_unicode(uni);
-                    Py_DECREF(uni);
-                    return rval;
-                }
-            }
-            break;
-        }
-    }
-
-    if (i == input_chars) {
-        /* Input is already ASCII */
-        output_size = 2 + input_chars;
-    }
-    else {
-        /* One char input can be up to 6 chars output, estimate 4 of these */
-        output_size = 2 + (MIN_EXPANSION * 4) + input_chars;
-    }
-    rval = PyString_FromStringAndSize(NULL, output_size);
-    if (rval == NULL) {
-        return NULL;
-    }
-    output = PyString_AS_STRING(rval);
-    output[0] = '"';
-
-    /* We know that everything up to i is ASCII already */
-    chars = i + 1;
-    memcpy(&output[1], input_str, i);
-
-    for (; i < input_chars; i++) {
-        Py_UNICODE c = (Py_UNICODE)(unsigned char)input_str[i];
-        if (S_CHAR(c)) {
-            output[chars++] = (char)c;
-        }
-        else {
-            chars = ascii_escape_char(c, output, chars);
-        }
-        /* An ASCII char can't possibly expand to a surrogate! */
-        if (output_size - chars < (1 + MIN_EXPANSION)) {
-            /* There's more than four, so let's resize by a lot */
-            output_size *= 2;
-            if (output_size > 2 + (input_chars * MIN_EXPANSION)) {
-                output_size = 2 + (input_chars * MIN_EXPANSION);
-            }
-            if (_PyString_Resize(&rval, output_size) == -1) {
-                return NULL;
-            }
-            output = PyString_AS_STRING(rval);
-        }
-    }
-    output[chars++] = '"';
-    if (_PyString_Resize(&rval, chars) == -1) {
-        return NULL;
-    }
-    return rval;
-}
-
-static void
-raise_errmsg(char *msg, PyObject *s, Py_ssize_t end)
-{
-    /* Use the Python function simplejson.decoder.errmsg to raise a nice
-    looking ValueError exception */
-    static PyObject *JSONDecodeError = NULL;
-    PyObject *exc;
-    if (JSONDecodeError == NULL) {
-        PyObject *decoder = PyImport_ImportModule("simplejson.decoder");
-        if (decoder == NULL)
-            return;
-        JSONDecodeError = PyObject_GetAttrString(decoder, "JSONDecodeError");
-        Py_DECREF(decoder);
-        if (JSONDecodeError == NULL)
-            return;
-    }
-    exc = PyObject_CallFunction(JSONDecodeError, "(zOO&)", msg, s, _convertPyInt_FromSsize_t, &end);
-    if (exc) {
-        PyErr_SetObject(JSONDecodeError, exc);
-        Py_DECREF(exc);
-    }
-}
-
-static PyObject *
-join_list_unicode(PyObject *lst)
-{
-    /* return u''.join(lst) */
-    static PyObject *joinfn = NULL;
-    if (joinfn == NULL) {
-        PyObject *ustr = PyUnicode_FromUnicode(NULL, 0);
-        if (ustr == NULL)
-            return NULL;
-
-        joinfn = PyObject_GetAttrString(ustr, "join");
-        Py_DECREF(ustr);
-        if (joinfn == NULL)
-            return NULL;
-    }
-    return PyObject_CallFunctionObjArgs(joinfn, lst, NULL);
-}
-
-static PyObject *
-join_list_string(PyObject *lst)
-{
-    /* return ''.join(lst) */
-    static PyObject *joinfn = NULL;
-    if (joinfn == NULL) {
-        PyObject *ustr = PyString_FromStringAndSize(NULL, 0);
-        if (ustr == NULL)
-            return NULL;
-
-        joinfn = PyObject_GetAttrString(ustr, "join");
-        Py_DECREF(ustr);
-        if (joinfn == NULL)
-            return NULL;
-    }
-    return PyObject_CallFunctionObjArgs(joinfn, lst, NULL);
-}
-
-static PyObject *
-_build_rval_index_tuple(PyObject *rval, Py_ssize_t idx) {
-    /* return (rval, idx) tuple, stealing reference to rval */
-    PyObject *tpl;
-    PyObject *pyidx;
-    /*
-    steal a reference to rval, returns (rval, idx)
-    */
-    if (rval == NULL) {
-        return NULL;
-    }
-    pyidx = PyInt_FromSsize_t(idx);
-    if (pyidx == NULL) {
-        Py_DECREF(rval);
-        return NULL;
-    }
-    tpl = PyTuple_New(2);
-    if (tpl == NULL) {
-        Py_DECREF(pyidx);
-        Py_DECREF(rval);
-        return NULL;
-    }
-    PyTuple_SET_ITEM(tpl, 0, rval);
-    PyTuple_SET_ITEM(tpl, 1, pyidx);
-    return tpl;
-}
-
-#define APPEND_OLD_CHUNK \
-    if (chunk != NULL) { \
-        if (chunks == NULL) { \
-            chunks = PyList_New(0); \
-            if (chunks == NULL) { \
-                goto bail; \
-            } \
-        } \
-        if (PyList_Append(chunks, chunk)) { \
-            goto bail; \
-        } \
-        Py_CLEAR(chunk); \
-    }
-
-static PyObject *
-scanstring_str(PyObject *pystr, Py_ssize_t end, char *encoding, int strict, Py_ssize_t *next_end_ptr)
-{
-    /* Read the JSON string from PyString pystr.
-    end is the index of the first character after the quote.
-    encoding is the encoding of pystr (must be an ASCII superset)
-    if strict is zero then literal control characters are allowed
-    *next_end_ptr is a return-by-reference index of the character
-        after the end quote
-
-    Return value is a new PyString (if ASCII-only) or PyUnicode
-    */
-    PyObject *rval;
-    Py_ssize_t len = PyString_GET_SIZE(pystr);
-    Py_ssize_t begin = end - 1;
-    Py_ssize_t next = begin;
-    int has_unicode = 0;
-    char *buf = PyString_AS_STRING(pystr);
-    PyObject *chunks = NULL;
-    PyObject *chunk = NULL;
-
-    if (end < 0 || len <= end) {
-        PyErr_SetString(PyExc_ValueError, "end is out of bounds");
-        goto bail;
-    }
-    while (1) {
-        /* Find the end of the string or the next escape */
-        Py_UNICODE c = 0;
-        for (next = end; next < len; next++) {
-            c = (unsigned char)buf[next];
-            if (c == '"' || c == '\\') {
-                break;
-            }
-            else if (strict && c <= 0x1f) {
-                raise_errmsg("Invalid control character at", pystr, next);
-                goto bail;
-            }
-            else if (c > 0x7f) {
-                has_unicode = 1;
-            }
-        }
-        if (!(c == '"' || c == '\\')) {
-            raise_errmsg("Unterminated string starting at", pystr, begin);
-            goto bail;
-        }
-        /* Pick up this chunk if it's not zero length */
-        if (next != end) {
-            PyObject *strchunk;
-            APPEND_OLD_CHUNK
-            strchunk = PyString_FromStringAndSize(&buf[end], next - end);
-            if (strchunk == NULL) {
-                goto bail;
-            }
-            if (has_unicode) {
-                chunk = PyUnicode_FromEncodedObject(strchunk, encoding, NULL);
-                Py_DECREF(strchunk);
-                if (chunk == NULL) {
-                    goto bail;
-                }
-            }
-            else {
-                chunk = strchunk;
-            }
-        }
-        next++;
-        if (c == '"') {
-            end = next;
-            break;
-        }
-        if (next == len) {
-            raise_errmsg("Unterminated string starting at", pystr, begin);
-            goto bail;
-        }
-        c = buf[next];
-        if (c != 'u') {
-            /* Non-unicode backslash escapes */
-            end = next + 1;
-            switch (c) {
-                case '"': break;
-                case '\\': break;
-                case '/': break;
-                case 'b': c = '\b'; break;
-                case 'f': c = '\f'; break;
-                case 'n': c = '\n'; break;
-                case 'r': c = '\r'; break;
-                case 't': c = '\t'; break;
-                default: c = 0;
-            }
-            if (c == 0) {
-                raise_errmsg("Invalid \\escape", pystr, end - 2);
-                goto bail;
-            }
-        }
-        else {
-            c = 0;
-            next++;
-            end = next + 4;
-            if (end >= len) {
-                raise_errmsg("Invalid \\uXXXX escape", pystr, next - 1);
-                goto bail;
-            }
-            /* Decode 4 hex digits */
-            for (; next < end; next++) {
-                Py_UNICODE digit = buf[next];
-                c <<= 4;
-                switch (digit) {
-                    case '0': case '1': case '2': case '3': case '4':
-                    case '5': case '6': case '7': case '8': case '9':
-                        c |= (digit - '0'); break;
-                    case 'a': case 'b': case 'c': case 'd': case 'e':
-                    case 'f':
-                        c |= (digit - 'a' + 10); break;
-                    case 'A': case 'B': case 'C': case 'D': case 'E':
-                    case 'F':
-                        c |= (digit - 'A' + 10); break;
-                    default:
-                        raise_errmsg("Invalid \\uXXXX escape", pystr, end - 5);
-                        goto bail;
-                }
-            }
-#ifdef Py_UNICODE_WIDE
-            /* Surrogate pair */
-            if ((c & 0xfc00) == 0xd800) {
-                Py_UNICODE c2 = 0;
-                if (end + 6 >= len) {
-                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
-                    goto bail;
-                }
-                if (buf[next++] != '\\' || buf[next++] != 'u') {
-                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
-                    goto bail;
-                }
-                end += 6;
-                /* Decode 4 hex digits */
-                for (; next < end; next++) {
-                    c2 <<= 4;
-                    Py_UNICODE digit = buf[next];
-                    switch (digit) {
-                        case '0': case '1': case '2': case '3': case '4':
-                        case '5': case '6': case '7': case '8': case '9':
-                            c2 |= (digit - '0'); break;
-                        case 'a': case 'b': case 'c': case 'd': case 'e':
-                        case 'f':
-                            c2 |= (digit - 'a' + 10); break;
-                        case 'A': case 'B': case 'C': case 'D': case 'E':
-                        case 'F':
-                            c2 |= (digit - 'A' + 10); break;
-                        default:
-                            raise_errmsg("Invalid \\uXXXX escape", pystr, end - 5);
-                            goto bail;
-                    }
-                }
-                if ((c2 & 0xfc00) != 0xdc00) {
-                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
-                    goto bail;
-                }
-                c = 0x10000 + (((c - 0xd800) << 10) | (c2 - 0xdc00));
-            }
-            else if ((c & 0xfc00) == 0xdc00) {
-                raise_errmsg("Unpaired low surrogate", pystr, end - 5);
-                goto bail;
-            }
-#endif
-        }
-        if (c > 0x7f) {
-            has_unicode = 1;
-        }
-        APPEND_OLD_CHUNK
-        if (has_unicode) {
-            chunk = PyUnicode_FromUnicode(&c, 1);
-            if (chunk == NULL) {
-                goto bail;
-            }
-        }
-        else {
-            char c_char = Py_CHARMASK(c);
-            chunk = PyString_FromStringAndSize(&c_char, 1);
-            if (chunk == NULL) {
-                goto bail;
-            }
-        }
-    }
-
-    if (chunks == NULL) {
-        if (chunk != NULL)
-            rval = chunk;
-        else
-            rval = PyString_FromStringAndSize("", 0);
-    }
-    else {
-        APPEND_OLD_CHUNK
-        rval = join_list_string(chunks);
-        if (rval == NULL) {
-            goto bail;
-        }
-        Py_CLEAR(chunks);
-    }
-
-    *next_end_ptr = end;
-    return rval;
-bail:
-    *next_end_ptr = -1;
-    Py_XDECREF(chunk);
-    Py_XDECREF(chunks);
-    return NULL;
-}
-
-
-static PyObject *
-scanstring_unicode(PyObject *pystr, Py_ssize_t end, int strict, Py_ssize_t *next_end_ptr)
-{
-    /* Read the JSON string from PyUnicode pystr.
-    end is the index of the first character after the quote.
-    if strict is zero then literal control characters are allowed
-    *next_end_ptr is a return-by-reference index of the character
-        after the end quote
-
-    Return value is a new PyUnicode
-    */
-    PyObject *rval;
-    Py_ssize_t len = PyUnicode_GET_SIZE(pystr);
-    Py_ssize_t begin = end - 1;
-    Py_ssize_t next = begin;
-    const Py_UNICODE *buf = PyUnicode_AS_UNICODE(pystr);
-    PyObject *chunks = NULL;
-    PyObject *chunk = NULL;
-
-    if (end < 0 || len <= end) {
-        PyErr_SetString(PyExc_ValueError, "end is out of bounds");
-        goto bail;
-    }
-    while (1) {
-        /* Find the end of the string or the next escape */
-        Py_UNICODE c = 0;
-        for (next = end; next < len; next++) {
-            c = buf[next];
-            if (c == '"' || c == '\\') {
-                break;
-            }
-            else if (strict && c <= 0x1f) {
-                raise_errmsg("Invalid control character at", pystr, next);
-                goto bail;
-            }
-        }
-        if (!(c == '"' || c == '\\')) {
-            raise_errmsg("Unterminated string starting at", pystr, begin);
-            goto bail;
-        }
-        /* Pick up this chunk if it's not zero length */
-        if (next != end) {
-            APPEND_OLD_CHUNK
-            chunk = PyUnicode_FromUnicode(&buf[end], next - end);
-            if (chunk == NULL) {
-                goto bail;
-            }
-        }
-        next++;
-        if (c == '"') {
-            end = next;
-            break;
-        }
-        if (next == len) {
-            raise_errmsg("Unterminated string starting at", pystr, begin);
-            goto bail;
-        }
-        c = buf[next];
-        if (c != 'u') {
-            /* Non-unicode backslash escapes */
-            end = next + 1;
-            switch (c) {
-                case '"': break;
-                case '\\': break;
-                case '/': break;
-                case 'b': c = '\b'; break;
-                case 'f': c = '\f'; break;
-                case 'n': c = '\n'; break;
-                case 'r': c = '\r'; break;
-                case 't': c = '\t'; break;
-                default: c = 0;
-            }
-            if (c == 0) {
-                raise_errmsg("Invalid \\escape", pystr, end - 2);
-                goto bail;
-            }
-        }
-        else {
-            c = 0;
-            next++;
-            end = next + 4;
-            if (end >= len) {
-                raise_errmsg("Invalid \\uXXXX escape", pystr, next - 1);
-                goto bail;
-            }
-            /* Decode 4 hex digits */
-            for (; next < end; next++) {
-                Py_UNICODE digit = buf[next];
-                c <<= 4;
-                switch (digit) {
-                    case '0': case '1': case '2': case '3': case '4':
-                    case '5': case '6': case '7': case '8': case '9':
-                        c |= (digit - '0'); break;
-                    case 'a': case 'b': case 'c': case 'd': case 'e':
-                    case 'f':
-                        c |= (digit - 'a' + 10); break;
-                    case 'A': case 'B': case 'C': case 'D': case 'E':
-                    case 'F':
-                        c |= (digit - 'A' + 10); break;
-                    default:
-                        raise_errmsg("Invalid \\uXXXX escape", pystr, end - 5);
-                        goto bail;
-                }
-            }
-#ifdef Py_UNICODE_WIDE
-            /* Surrogate pair */
-            if ((c & 0xfc00) == 0xd800) {
-                Py_UNICODE c2 = 0;
-                if (end + 6 >= len) {
-                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
-                    goto bail;
-                }
-                if (buf[next++] != '\\' || buf[next++] != 'u') {
-                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
-                    goto bail;
-                }
-                end += 6;
-                /* Decode 4 hex digits */
-                for (; next < end; next++) {
-                    c2 <<= 4;
-                    Py_UNICODE digit = buf[next];
-                    switch (digit) {
-                        case '0': case '1': case '2': case '3': case '4':
-                        case '5': case '6': case '7': case '8': case '9':
-                            c2 |= (digit - '0'); break;
-                        case 'a': case 'b': case 'c': case 'd': case 'e':
-                        case 'f':
-                            c2 |= (digit - 'a' + 10); break;
-                        case 'A': case 'B': case 'C': case 'D': case 'E':
-                        case 'F':
-                            c2 |= (digit - 'A' + 10); break;
-                        default:
-                            raise_errmsg("Invalid \\uXXXX escape", pystr, end - 5);
-                            goto bail;
-                    }
-                }
-                if ((c2 & 0xfc00) != 0xdc00) {
-                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
-                    goto bail;
-                }
-                c = 0x10000 + (((c - 0xd800) << 10) | (c2 - 0xdc00));
-            }
-            else if ((c & 0xfc00) == 0xdc00) {
-                raise_errmsg("Unpaired low surrogate", pystr, end - 5);
-                goto bail;
-            }
-#endif
-        }
-        APPEND_OLD_CHUNK
-        chunk = PyUnicode_FromUnicode(&c, 1);
-        if (chunk == NULL) {
-            goto bail;
-        }
-    }
-
-    if (chunks == NULL) {
-        if (chunk != NULL)
-            rval = chunk;
-        else
-            rval = PyUnicode_FromUnicode(NULL, 0);
-    }
-    else {
-        APPEND_OLD_CHUNK
-        rval = join_list_unicode(chunks);
-        if (rval == NULL) {
-            goto bail;
-        }
-        Py_CLEAR(chunks);
-    }
-    *next_end_ptr = end;
-    return rval;
-bail:
-    *next_end_ptr = -1;
-    Py_XDECREF(chunk);
-    Py_XDECREF(chunks);
-    return NULL;
-}
-
-PyDoc_STRVAR(pydoc_scanstring,
-    "scanstring(basestring, end, encoding, strict=True) -> (str, end)\n"
-    "\n"
-    "Scan the string s for a JSON string. End is the index of the\n"
-    "character in s after the quote that started the JSON string.\n"
-    "Unescapes all valid JSON string escape sequences and raises ValueError\n"
-    "on attempt to decode an invalid string. If strict is False then literal\n"
-    "control characters are allowed in the string.\n"
-    "\n"
-    "Returns a tuple of the decoded string and the index of the character in s\n"
-    "after the end quote."
-);
-
-static PyObject *
-py_scanstring(PyObject* self UNUSED, PyObject *args)
-{
-    PyObject *pystr;
-    PyObject *rval;
-    Py_ssize_t end;
-    Py_ssize_t next_end = -1;
-    char *encoding = NULL;
-    int strict = 1;
-    if (!PyArg_ParseTuple(args, "OO&|zi:scanstring", &pystr, _convertPyInt_AsSsize_t, &end, &encoding, &strict)) {
-        return NULL;
-    }
-    if (encoding == NULL) {
-        encoding = DEFAULT_ENCODING;
-    }
-    if (PyString_Check(pystr)) {
-        rval = scanstring_str(pystr, end, encoding, strict, &next_end);
-    }
-    else if (PyUnicode_Check(pystr)) {
-        rval = scanstring_unicode(pystr, end, strict, &next_end);
-    }
-    else {
-        PyErr_Format(PyExc_TypeError,
-                     "first argument must be a string, not %.80s",
-                     Py_TYPE(pystr)->tp_name);
-        return NULL;
-    }
-    return _build_rval_index_tuple(rval, next_end);
-}
-
-PyDoc_STRVAR(pydoc_encode_basestring_ascii,
-    "encode_basestring_ascii(basestring) -> str\n"
-    "\n"
-    "Return an ASCII-only JSON representation of a Python string"
-);
-
-static PyObject *
-py_encode_basestring_ascii(PyObject* self UNUSED, PyObject *pystr)
-{
-    /* Return an ASCII-only JSON representation of a Python string */
-    /* METH_O */
-    if (PyString_Check(pystr)) {
-        return ascii_escape_str(pystr);
-    }
-    else if (PyUnicode_Check(pystr)) {
-        return ascii_escape_unicode(pystr);
-    }
-    else {
-        PyErr_Format(PyExc_TypeError,
-                     "first argument must be a string, not %.80s",
-                     Py_TYPE(pystr)->tp_name);
-        return NULL;
-    }
-}
-
-static void
-scanner_dealloc(PyObject *self)
-{
-    /* Deallocate scanner object */
-    scanner_clear(self);
-    Py_TYPE(self)->tp_free(self);
-}
-
-static int
-scanner_traverse(PyObject *self, visitproc visit, void *arg)
-{
-    PyScannerObject *s;
-    assert(PyScanner_Check(self));
-    s = (PyScannerObject *)self;
-    Py_VISIT(s->encoding);
-    Py_VISIT(s->strict);
-    Py_VISIT(s->object_hook);
-    Py_VISIT(s->pairs_hook);
-    Py_VISIT(s->parse_float);
-    Py_VISIT(s->parse_int);
-    Py_VISIT(s->parse_constant);
-    Py_VISIT(s->memo);
-    return 0;
-}
-
-static int
-scanner_clear(PyObject *self)
-{
-    PyScannerObject *s;
-    assert(PyScanner_Check(self));
-    s = (PyScannerObject *)self;
-    Py_CLEAR(s->encoding);
-    Py_CLEAR(s->strict);
-    Py_CLEAR(s->object_hook);
-    Py_CLEAR(s->pairs_hook);
-    Py_CLEAR(s->parse_float);
-    Py_CLEAR(s->parse_int);
-    Py_CLEAR(s->parse_constant);
-    Py_CLEAR(s->memo);
-    return 0;
-}
-
-static PyObject *
-_parse_object_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON object from PyString pystr.
-    idx is the index of the first character after the opening curly brace.
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the closing curly brace.
-
-    Returns a new PyObject (usually a dict, but object_hook or
-    object_pairs_hook can change that)
-    */
-    char *str = PyString_AS_STRING(pystr);
-    Py_ssize_t end_idx = PyString_GET_SIZE(pystr) - 1;
-    PyObject *rval = NULL;
-    PyObject *pairs = NULL;
-    PyObject *item;
-    PyObject *key = NULL;
-    PyObject *val = NULL;
-    char *encoding = PyString_AS_STRING(s->encoding);
-    int strict = PyObject_IsTrue(s->strict);
-    int has_pairs_hook = (s->pairs_hook != Py_None);
-    Py_ssize_t next_idx;
-    if (has_pairs_hook) {
-        pairs = PyList_New(0);
-        if (pairs == NULL)
-            return NULL;
-    }
-    else {
-        rval = PyDict_New();
-        if (rval == NULL)
-            return NULL;
-    }
-
-    /* skip whitespace after { */
-    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-    /* only loop if the object is non-empty */
-    if (idx <= end_idx && str[idx] != '}') {
-        while (idx <= end_idx) {
-            PyObject *memokey;
-
-            /* read key */
-            if (str[idx] != '"') {
-                raise_errmsg("Expecting property name", pystr, idx);
-                goto bail;
-            }
-            key = scanstring_str(pystr, idx + 1, encoding, strict, &next_idx);
-            if (key == NULL)
-                goto bail;
-            memokey = PyDict_GetItem(s->memo, key);
-            if (memokey != NULL) {
-                Py_INCREF(memokey);
-                Py_DECREF(key);
-                key = memokey;
-            }
-            else {
-                if (PyDict_SetItem(s->memo, key, key) < 0)
-                    goto bail;
-            }
-            idx = next_idx;
-
-            /* skip whitespace between key and : delimiter, read :, skip whitespace */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-            if (idx > end_idx || str[idx] != ':') {
-                raise_errmsg("Expecting : delimiter", pystr, idx);
-                goto bail;
-            }
-            idx++;
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-            /* read any JSON data type */
-            val = scan_once_str(s, pystr, idx, &next_idx);
-            if (val == NULL)
-                goto bail;
-
-            if (has_pairs_hook) {
-                item = PyTuple_Pack(2, key, val);
-                if (item == NULL)
-                    goto bail;
-                Py_CLEAR(key);
-                Py_CLEAR(val);
-                if (PyList_Append(pairs, item) == -1) {
-                    Py_DECREF(item);
-                    goto bail;
-                }
-                Py_DECREF(item);
-            }
-            else {
-                if (PyDict_SetItem(rval, key, val) < 0)
-                    goto bail;
-                Py_CLEAR(key);
-                Py_CLEAR(val);
-            }
-            idx = next_idx;
-
-            /* skip whitespace before } or , */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-            /* bail if the object is closed or we didn't get the , delimiter */
-            if (idx > end_idx) break;
-            if (str[idx] == '}') {
-                break;
-            }
-            else if (str[idx] != ',') {
-                raise_errmsg("Expecting , delimiter", pystr, idx);
-                goto bail;
-            }
-            idx++;
-
-            /* skip whitespace after , delimiter */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-        }
-    }
-    /* verify that idx < end_idx, str[idx] should be '}' */
-    if (idx > end_idx || str[idx] != '}') {
-        raise_errmsg("Expecting object", pystr, end_idx);
-        goto bail;
-    }
-
-    /* if pairs_hook is not None: rval = object_pairs_hook(pairs) */
-    if (s->pairs_hook != Py_None) {
-        val = PyObject_CallFunctionObjArgs(s->pairs_hook, pairs, NULL);
-        if (val == NULL)
-            goto bail;
-        Py_DECREF(pairs);
-        *next_idx_ptr = idx + 1;
-        return val;
-    }
-
-    /* if object_hook is not None: rval = object_hook(rval) */
-    if (s->object_hook != Py_None) {
-        val = PyObject_CallFunctionObjArgs(s->object_hook, rval, NULL);
-        if (val == NULL)
-            goto bail;
-        Py_DECREF(rval);
-        rval = val;
-        val = NULL;
-    }
-    *next_idx_ptr = idx + 1;
-    return rval;
-bail:
-    Py_XDECREF(rval);
-    Py_XDECREF(key);
-    Py_XDECREF(val);
-    Py_XDECREF(pairs);
-    return NULL;
-}
-
-static PyObject *
-_parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON object from PyUnicode pystr.
-    idx is the index of the first character after the opening curly brace.
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the closing curly brace.
-
-    Returns a new PyObject (usually a dict, but object_hook can change that)
-    */
-    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
-    Py_ssize_t end_idx = PyUnicode_GET_SIZE(pystr) - 1;
-    PyObject *rval = NULL;
-    PyObject *pairs = NULL;
-    PyObject *item;
-    PyObject *key = NULL;
-    PyObject *val = NULL;
-    int strict = PyObject_IsTrue(s->strict);
-    int has_pairs_hook = (s->pairs_hook != Py_None);
-    Py_ssize_t next_idx;
-
-    if (has_pairs_hook) {
-        pairs = PyList_New(0);
-        if (pairs == NULL)
-            return NULL;
-    }
-    else {
-        rval = PyDict_New();
-        if (rval == NULL)
-            return NULL;
-    }
-    
-    /* skip whitespace after { */
-    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-    /* only loop if the object is non-empty */
-    if (idx <= end_idx && str[idx] != '}') {
-        while (idx <= end_idx) {
-            PyObject *memokey;
-
-            /* read key */
-            if (str[idx] != '"') {
-                raise_errmsg("Expecting property name", pystr, idx);
-                goto bail;
-            }
-            key = scanstring_unicode(pystr, idx + 1, strict, &next_idx);
-            if (key == NULL)
-                goto bail;
-            memokey = PyDict_GetItem(s->memo, key);
-            if (memokey != NULL) {
-                Py_INCREF(memokey);
-                Py_DECREF(key);
-                key = memokey;
-            }
-            else {
-                if (PyDict_SetItem(s->memo, key, key) < 0)
-                    goto bail;
-            }
-            idx = next_idx;
-
-            /* skip whitespace between key and : delimiter, read :, skip whitespace */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-            if (idx > end_idx || str[idx] != ':') {
-                raise_errmsg("Expecting : delimiter", pystr, idx);
-                goto bail;
-            }
-            idx++;
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-            /* read any JSON term */
-            val = scan_once_unicode(s, pystr, idx, &next_idx);
-            if (val == NULL)
-                goto bail;
-
-            if (has_pairs_hook) {
-                item = PyTuple_Pack(2, key, val);
-                if (item == NULL)
-                    goto bail;
-                Py_CLEAR(key);
-                Py_CLEAR(val);
-                if (PyList_Append(pairs, item) == -1) {
-                    Py_DECREF(item);
-                    goto bail;
-                }
-                Py_DECREF(item);
-            }
-            else {
-                if (PyDict_SetItem(rval, key, val) < 0)
-                    goto bail;
-                Py_CLEAR(key);
-                Py_CLEAR(val);
-            }
-            idx = next_idx;
-
-            /* skip whitespace before } or , */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-            /* bail if the object is closed or we didn't get the , delimiter */
-            if (idx > end_idx) break;
-            if (str[idx] == '}') {
-                break;
-            }
-            else if (str[idx] != ',') {
-                raise_errmsg("Expecting , delimiter", pystr, idx);
-                goto bail;
-            }
-            idx++;
-
-            /* skip whitespace after , delimiter */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-        }
-    }
-
-    /* verify that idx < end_idx, str[idx] should be '}' */
-    if (idx > end_idx || str[idx] != '}') {
-        raise_errmsg("Expecting object", pystr, end_idx);
-        goto bail;
-    }
-
-    /* if pairs_hook is not None: rval = object_pairs_hook(pairs) */
-    if (s->pairs_hook != Py_None) {
-        val = PyObject_CallFunctionObjArgs(s->pairs_hook, pairs, NULL);
-        if (val == NULL)
-            goto bail;
-        Py_DECREF(pairs);
-        *next_idx_ptr = idx + 1;
-        return val;
-    }
-
-    /* if object_hook is not None: rval = object_hook(rval) */
-    if (s->object_hook != Py_None) {
-        val = PyObject_CallFunctionObjArgs(s->object_hook, rval, NULL);
-        if (val == NULL)
-            goto bail;
-        Py_DECREF(rval);
-        rval = val;
-        val = NULL;
-    }
-    *next_idx_ptr = idx + 1;
-    return rval;
-bail:
-    Py_XDECREF(rval);
-    Py_XDECREF(key);
-    Py_XDECREF(val);
-    Py_XDECREF(pairs);
-    return NULL;
-}
-
-static PyObject *
-_parse_array_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON array from PyString pystr.
-    idx is the index of the first character after the opening brace.
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the closing brace.
-
-    Returns a new PyList
-    */
-    char *str = PyString_AS_STRING(pystr);
-    Py_ssize_t end_idx = PyString_GET_SIZE(pystr) - 1;
-    PyObject *val = NULL;
-    PyObject *rval = PyList_New(0);
-    Py_ssize_t next_idx;
-    if (rval == NULL)
-        return NULL;
-
-    /* skip whitespace after [ */
-    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-    /* only loop if the array is non-empty */
-    if (idx <= end_idx && str[idx] != ']') {
-        while (idx <= end_idx) {
-
-            /* read any JSON term and de-tuplefy the (rval, idx) */
-            val = scan_once_str(s, pystr, idx, &next_idx);
-            if (val == NULL) {
-                if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
-                    PyErr_Clear();
-                    raise_errmsg("Expecting object", pystr, idx);
-                }
-                goto bail;
-            }
-
-            if (PyList_Append(rval, val) == -1)
-                goto bail;
-
-            Py_CLEAR(val);
-            idx = next_idx;
-
-            /* skip whitespace between term and , */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-            /* bail if the array is closed or we didn't get the , delimiter */
-            if (idx > end_idx) break;
-            if (str[idx] == ']') {
-                break;
-            }
-            else if (str[idx] != ',') {
-                raise_errmsg("Expecting , delimiter", pystr, idx);
-                goto bail;
-            }
-            idx++;
-
-            /* skip whitespace after , */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-        }
-    }
-
-    /* verify that idx < end_idx, str[idx] should be ']' */
-    if (idx > end_idx || str[idx] != ']') {
-        raise_errmsg("Expecting object", pystr, end_idx);
-        goto bail;
-    }
-    *next_idx_ptr = idx + 1;
-    return rval;
-bail:
-    Py_XDECREF(val);
-    Py_DECREF(rval);
-    return NULL;
-}
-
-static PyObject *
-_parse_array_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON array from PyString pystr.
-    idx is the index of the first character after the opening brace.
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the closing brace.
-
-    Returns a new PyList
-    */
-    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
-    Py_ssize_t end_idx = PyUnicode_GET_SIZE(pystr) - 1;
-    PyObject *val = NULL;
-    PyObject *rval = PyList_New(0);
-    Py_ssize_t next_idx;
-    if (rval == NULL)
-        return NULL;
-
-    /* skip whitespace after [ */
-    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-    /* only loop if the array is non-empty */
-    if (idx <= end_idx && str[idx] != ']') {
-        while (idx <= end_idx) {
-
-            /* read any JSON term  */
-            val = scan_once_unicode(s, pystr, idx, &next_idx);
-            if (val == NULL) {
-                if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
-                    PyErr_Clear();
-                    raise_errmsg("Expecting object", pystr, idx);
-                }
-                goto bail;
-            }
-
-            if (PyList_Append(rval, val) == -1)
-                goto bail;
-
-            Py_CLEAR(val);
-            idx = next_idx;
-
-            /* skip whitespace between term and , */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-
-            /* bail if the array is closed or we didn't get the , delimiter */
-            if (idx > end_idx) break;
-            if (str[idx] == ']') {
-                break;
-            }
-            else if (str[idx] != ',') {
-                raise_errmsg("Expecting , delimiter", pystr, idx);
-                goto bail;
-            }
-            idx++;
-
-            /* skip whitespace after , */
-            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
-        }
-    }
-
-    /* verify that idx < end_idx, str[idx] should be ']' */
-    if (idx > end_idx || str[idx] != ']') {
-        raise_errmsg("Expecting object", pystr, end_idx);
-        goto bail;
-    }
-    *next_idx_ptr = idx + 1;
-    return rval;
-bail:
-    Py_XDECREF(val);
-    Py_DECREF(rval);
-    return NULL;
-}
-
-static PyObject *
-_parse_constant(PyScannerObject *s, char *constant, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON constant from PyString pystr.
-    constant is the constant string that was found
-        ("NaN", "Infinity", "-Infinity").
-    idx is the index of the first character of the constant
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the constant.
-
-    Returns the result of parse_constant
-    */
-    PyObject *cstr;
-    PyObject *rval;
-    /* constant is "NaN", "Infinity", or "-Infinity" */
-    cstr = PyString_InternFromString(constant);
-    if (cstr == NULL)
-        return NULL;
-
-    /* rval = parse_constant(constant) */
-    rval = PyObject_CallFunctionObjArgs(s->parse_constant, cstr, NULL);
-    idx += PyString_GET_SIZE(cstr);
-    Py_DECREF(cstr);
-    *next_idx_ptr = idx;
-    return rval;
-}
-
-static PyObject *
-_match_number_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t start, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON number from PyString pystr.
-    idx is the index of the first character of the number
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the number.
-
-    Returns a new PyObject representation of that number:
-        PyInt, PyLong, or PyFloat.
-        May return other types if parse_int or parse_float are set
-    */
-    char *str = PyString_AS_STRING(pystr);
-    Py_ssize_t end_idx = PyString_GET_SIZE(pystr) - 1;
-    Py_ssize_t idx = start;
-    int is_float = 0;
-    PyObject *rval;
-    PyObject *numstr;
-
-    /* read a sign if it's there, make sure it's not the end of the string */
-    if (str[idx] == '-') {
-        idx++;
-        if (idx > end_idx) {
-            PyErr_SetNone(PyExc_StopIteration);
-            return NULL;
-        }
-    }
-
-    /* read as many integer digits as we find as long as it doesn't start with 0 */
-    if (str[idx] >= '1' && str[idx] <= '9') {
-        idx++;
-        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
-    }
-    /* if it starts with 0 we only expect one integer digit */
-    else if (str[idx] == '0') {
-        idx++;
-    }
-    /* no integer digits, error */
-    else {
-        PyErr_SetNone(PyExc_StopIteration);
-        return NULL;
-    }
-
-    /* if the next char is '.' followed by a digit then read all float digits */
-    if (idx < end_idx && str[idx] == '.' && str[idx + 1] >= '0' && str[idx + 1] <= '9') {
-        is_float = 1;
-        idx += 2;
-        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
-    }
-
-    /* if the next char is 'e' or 'E' then maybe read the exponent (or backtrack) */
-    if (idx < end_idx && (str[idx] == 'e' || str[idx] == 'E')) {
-
-        /* save the index of the 'e' or 'E' just in case we need to backtrack */
-        Py_ssize_t e_start = idx;
-        idx++;
-
-        /* read an exponent sign if present */
-        if (idx < end_idx && (str[idx] == '-' || str[idx] == '+')) idx++;
-
-        /* read all digits */
-        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
-
-        /* if we got a digit, then parse as float. if not, backtrack */
-        if (str[idx - 1] >= '0' && str[idx - 1] <= '9') {
-            is_float = 1;
-        }
-        else {
-            idx = e_start;
-        }
-    }
-
-    /* copy the section we determined to be a number */
-    numstr = PyString_FromStringAndSize(&str[start], idx - start);
-    if (numstr == NULL)
-        return NULL;
-    if (is_float) {
-        /* parse as a float using a fast path if available, otherwise call user defined method */
-        if (s->parse_float != (PyObject *)&PyFloat_Type) {
-            rval = PyObject_CallFunctionObjArgs(s->parse_float, numstr, NULL);
-        }
-        else {
-            /* rval = PyFloat_FromDouble(PyOS_ascii_atof(PyString_AS_STRING(numstr))); */
-            double d = PyOS_string_to_double(PyString_AS_STRING(numstr),
-                                             NULL, NULL);
-            if (d == -1.0 && PyErr_Occurred())
-                return NULL;
-            rval = PyFloat_FromDouble(d);
-        }
-    }
-    else {
-        /* parse as an int using a fast path if available, otherwise call user defined method */
-        if (s->parse_int != (PyObject *)&PyInt_Type) {
-            rval = PyObject_CallFunctionObjArgs(s->parse_int, numstr, NULL);
-        }
-        else {
-            rval = PyInt_FromString(PyString_AS_STRING(numstr), NULL, 10);
-        }
-    }
-    Py_DECREF(numstr);
-    *next_idx_ptr = idx;
-    return rval;
-}
-
-static PyObject *
-_match_number_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t start, Py_ssize_t *next_idx_ptr) {
-    /* Read a JSON number from PyUnicode pystr.
-    idx is the index of the first character of the number
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the number.
-
-    Returns a new PyObject representation of that number:
-        PyInt, PyLong, or PyFloat.
-        May return other types if parse_int or parse_float are set
-    */
-    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
-    Py_ssize_t end_idx = PyUnicode_GET_SIZE(pystr) - 1;
-    Py_ssize_t idx = start;
-    int is_float = 0;
-    PyObject *rval;
-    PyObject *numstr;
-
-    /* read a sign if it's there, make sure it's not the end of the string */
-    if (str[idx] == '-') {
-        idx++;
-        if (idx > end_idx) {
-            PyErr_SetNone(PyExc_StopIteration);
-            return NULL;
-        }
-    }
-
-    /* read as many integer digits as we find as long as it doesn't start with 0 */
-    if (str[idx] >= '1' && str[idx] <= '9') {
-        idx++;
-        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
-    }
-    /* if it starts with 0 we only expect one integer digit */
-    else if (str[idx] == '0') {
-        idx++;
-    }
-    /* no integer digits, error */
-    else {
-        PyErr_SetNone(PyExc_StopIteration);
-        return NULL;
-    }
-
-    /* if the next char is '.' followed by a digit then read all float digits */
-    if (idx < end_idx && str[idx] == '.' && str[idx + 1] >= '0' && str[idx + 1] <= '9') {
-        is_float = 1;
-        idx += 2;
-        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
-    }
-
-    /* if the next char is 'e' or 'E' then maybe read the exponent (or backtrack) */
-    if (idx < end_idx && (str[idx] == 'e' || str[idx] == 'E')) {
-        Py_ssize_t e_start = idx;
-        idx++;
-
-        /* read an exponent sign if present */
-        if (idx < end_idx && (str[idx] == '-' || str[idx] == '+')) idx++;
-
-        /* read all digits */
-        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
-
-        /* if we got a digit, then parse as float. if not, backtrack */
-        if (str[idx - 1] >= '0' && str[idx - 1] <= '9') {
-            is_float = 1;
-        }
-        else {
-            idx = e_start;
-        }
-    }
-
-    /* copy the section we determined to be a number */
-    numstr = PyUnicode_FromUnicode(&str[start], idx - start);
-    if (numstr == NULL)
-        return NULL;
-    if (is_float) {
-        /* parse as a float using a fast path if available, otherwise call user defined method */
-        if (s->parse_float != (PyObject *)&PyFloat_Type) {
-            rval = PyObject_CallFunctionObjArgs(s->parse_float, numstr, NULL);
-        }
-        else {
-            rval = PyFloat_FromString(numstr, NULL);
-        }
-    }
-    else {
-        /* no fast path for unicode -> int, just call */
-        rval = PyObject_CallFunctionObjArgs(s->parse_int, numstr, NULL);
-    }
-    Py_DECREF(numstr);
-    *next_idx_ptr = idx;
-    return rval;
-}
-
-static PyObject *
-scan_once_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
-{
-    /* Read one JSON term (of any kind) from PyString pystr.
-    idx is the index of the first character of the term
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the number.
-
-    Returns a new PyObject representation of the term.
-    */
-    char *str = PyString_AS_STRING(pystr);
-    Py_ssize_t length = PyString_GET_SIZE(pystr);
-    if (idx >= length) {
-        PyErr_SetNone(PyExc_StopIteration);
-        return NULL;
-    }
-    switch (str[idx]) {
-        case '"':
-            /* string */
-            return scanstring_str(pystr, idx + 1,
-                PyString_AS_STRING(s->encoding),
-                PyObject_IsTrue(s->strict),
-                next_idx_ptr);
-        case '{':
-            /* object */
-            return _parse_object_str(s, pystr, idx + 1, next_idx_ptr);
-        case '[':
-            /* array */
-            return _parse_array_str(s, pystr, idx + 1, next_idx_ptr);
-        case 'n':
-            /* null */
-            if ((idx + 3 < length) && str[idx + 1] == 'u' && str[idx + 2] == 'l' && str[idx + 3] == 'l') {
-                Py_INCREF(Py_None);
-                *next_idx_ptr = idx + 4;
-                return Py_None;
-            }
-            break;
-        case 't':
-            /* true */
-            if ((idx + 3 < length) && str[idx + 1] == 'r' && str[idx + 2] == 'u' && str[idx + 3] == 'e') {
-                Py_INCREF(Py_True);
-                *next_idx_ptr = idx + 4;
-                return Py_True;
-            }
-            break;
-        case 'f':
-            /* false */
-            if ((idx + 4 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'l' && str[idx + 3] == 's' && str[idx + 4] == 'e') {
-                Py_INCREF(Py_False);
-                *next_idx_ptr = idx + 5;
-                return Py_False;
-            }
-            break;
-        case 'N':
-            /* NaN */
-            if ((idx + 2 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'N') {
-                return _parse_constant(s, "NaN", idx, next_idx_ptr);
-            }
-            break;
-        case 'I':
-            /* Infinity */
-            if ((idx + 7 < length) && str[idx + 1] == 'n' && str[idx + 2] == 'f' && str[idx + 3] == 'i' && str[idx + 4] == 'n' && str[idx + 5] == 'i' && str[idx + 6] == 't' && str[idx + 7] == 'y') {
-                return _parse_constant(s, "Infinity", idx, next_idx_ptr);
-            }
-            break;
-        case '-':
-            /* -Infinity */
-            if ((idx + 8 < length) && str[idx + 1] == 'I' && str[idx + 2] == 'n' && str[idx + 3] == 'f' && str[idx + 4] == 'i' && str[idx + 5] == 'n' && str[idx + 6] == 'i' && str[idx + 7] == 't' && str[idx + 8] == 'y') {
-                return _parse_constant(s, "-Infinity", idx, next_idx_ptr);
-            }
-            break;
-    }
-    /* Didn't find a string, object, array, or named constant. Look for a number. */
-    return _match_number_str(s, pystr, idx, next_idx_ptr);
-}
-
-static PyObject *
-scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
-{
-    /* Read one JSON term (of any kind) from PyUnicode pystr.
-    idx is the index of the first character of the term
-    *next_idx_ptr is a return-by-reference index to the first character after
-        the number.
-
-    Returns a new PyObject representation of the term.
-    */
-    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
-    Py_ssize_t length = PyUnicode_GET_SIZE(pystr);
-    if (idx >= length) {
-        PyErr_SetNone(PyExc_StopIteration);
-        return NULL;
-    }
-    switch (str[idx]) {
-        case '"':
-            /* string */
-            return scanstring_unicode(pystr, idx + 1,
-                PyObject_IsTrue(s->strict),
-                next_idx_ptr);
-        case '{':
-            /* object */
-            return _parse_object_unicode(s, pystr, idx + 1, next_idx_ptr);
-        case '[':
-            /* array */
-            return _parse_array_unicode(s, pystr, idx + 1, next_idx_ptr);
-        case 'n':
-            /* null */
-            if ((idx + 3 < length) && str[idx + 1] == 'u' && str[idx + 2] == 'l' && str[idx + 3] == 'l') {
-                Py_INCREF(Py_None);
-                *next_idx_ptr = idx + 4;
-                return Py_None;
-            }
-            break;
-        case 't':
-            /* true */
-            if ((idx + 3 < length) && str[idx + 1] == 'r' && str[idx + 2] == 'u' && str[idx + 3] == 'e') {
-                Py_INCREF(Py_True);
-                *next_idx_ptr = idx + 4;
-                return Py_True;
-            }
-            break;
-        case 'f':
-            /* false */
-            if ((idx + 4 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'l' && str[idx + 3] == 's' && str[idx + 4] == 'e') {
-                Py_INCREF(Py_False);
-                *next_idx_ptr = idx + 5;
-                return Py_False;
-            }
-            break;
-        case 'N':
-            /* NaN */
-            if ((idx + 2 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'N') {
-                return _parse_constant(s, "NaN", idx, next_idx_ptr);
-            }
-            break;
-        case 'I':
-            /* Infinity */
-            if ((idx + 7 < length) && str[idx + 1] == 'n' && str[idx + 2] == 'f' && str[idx + 3] == 'i' && str[idx + 4] == 'n' && str[idx + 5] == 'i' && str[idx + 6] == 't' && str[idx + 7] == 'y') {
-                return _parse_constant(s, "Infinity", idx, next_idx_ptr);
-            }
-            break;
-        case '-':
-            /* -Infinity */
-            if ((idx + 8 < length) && str[idx + 1] == 'I' && str[idx + 2] == 'n' && str[idx + 3] == 'f' && str[idx + 4] == 'i' && str[idx + 5] == 'n' && str[idx + 6] == 'i' && str[idx + 7] == 't' && str[idx + 8] == 'y') {
-                return _parse_constant(s, "-Infinity", idx, next_idx_ptr);
-            }
-            break;
-    }
-    /* Didn't find a string, object, array, or named constant. Look for a number. */
-    return _match_number_unicode(s, pystr, idx, next_idx_ptr);
-}
-
-static PyObject *
-scanner_call(PyObject *self, PyObject *args, PyObject *kwds)
-{
-    /* Python callable interface to scan_once_{str,unicode} */
-    PyObject *pystr;
-    PyObject *rval;
-    Py_ssize_t idx;
-    Py_ssize_t next_idx = -1;
-    static char *kwlist[] = {"string", "idx", NULL};
-    PyScannerObject *s;
-    assert(PyScanner_Check(self));
-    s = (PyScannerObject *)self;
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO&:scan_once", kwlist, &pystr, _convertPyInt_AsSsize_t, &idx))
-        return NULL;
-
-    if (PyString_Check(pystr)) {
-        rval = scan_once_str(s, pystr, idx, &next_idx);
-    }
-    else if (PyUnicode_Check(pystr)) {
-        rval = scan_once_unicode(s, pystr, idx, &next_idx);
-    }
-    else {
-        PyErr_Format(PyExc_TypeError,
-                 "first argument must be a string, not %.80s",
-                 Py_TYPE(pystr)->tp_name);
-        return NULL;
-    }
-    PyDict_Clear(s->memo);
-    return _build_rval_index_tuple(rval, next_idx);
-}
-
-static PyObject *
-scanner_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
-{
-    PyScannerObject *s;
-    s = (PyScannerObject *)type->tp_alloc(type, 0);
-    if (s != NULL) {
-        s->encoding = NULL;
-        s->strict = NULL;
-        s->object_hook = NULL;
-        s->pairs_hook = NULL;
-        s->parse_float = NULL;
-        s->parse_int = NULL;
-        s->parse_constant = NULL;
-    }
-    return (PyObject *)s;
-}
-
-static int
-scanner_init(PyObject *self, PyObject *args, PyObject *kwds)
-{
-    /* Initialize Scanner object */
-    PyObject *ctx;
-    static char *kwlist[] = {"context", NULL};
-    PyScannerObject *s;
-
-    assert(PyScanner_Check(self));
-    s = (PyScannerObject *)self;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:make_scanner", kwlist, &ctx))
-        return -1;
-    
-    if (s->memo == NULL) {
-        s->memo = PyDict_New();
-        if (s->memo == NULL)
-            goto bail;
-    }
-
-    /* PyString_AS_STRING is used on encoding */
-    s->encoding = PyObject_GetAttrString(ctx, "encoding");
-    if (s->encoding == NULL)
-        goto bail;
-    if (s->encoding == Py_None) {
-        Py_DECREF(Py_None);
-        s->encoding = PyString_InternFromString(DEFAULT_ENCODING);
-    }
-    else if (PyUnicode_Check(s->encoding)) {
-        PyObject *tmp = PyUnicode_AsEncodedString(s->encoding, NULL, NULL);
-        Py_DECREF(s->encoding);
-        s->encoding = tmp;
-    }
-    if (s->encoding == NULL || !PyString_Check(s->encoding))
-        goto bail;
-
-    /* All of these will fail "gracefully" so we don't need to verify them */
-    s->strict = PyObject_GetAttrString(ctx, "strict");
-    if (s->strict == NULL)
-        goto bail;
-    s->object_hook = PyObject_GetAttrString(ctx, "object_hook");
-    if (s->object_hook == NULL)
-        goto bail;
-    s->pairs_hook = PyObject_GetAttrString(ctx, "object_pairs_hook");
-    if (s->pairs_hook == NULL)
-        goto bail;
-    s->parse_float = PyObject_GetAttrString(ctx, "parse_float");
-    if (s->parse_float == NULL)
-        goto bail;
-    s->parse_int = PyObject_GetAttrString(ctx, "parse_int");
-    if (s->parse_int == NULL)
-        goto bail;
-    s->parse_constant = PyObject_GetAttrString(ctx, "parse_constant");
-    if (s->parse_constant == NULL)
-        goto bail;
-
-    return 0;
-
-bail:
-    Py_CLEAR(s->encoding);
-    Py_CLEAR(s->strict);
-    Py_CLEAR(s->object_hook);
-    Py_CLEAR(s->pairs_hook);
-    Py_CLEAR(s->parse_float);
-    Py_CLEAR(s->parse_int);
-    Py_CLEAR(s->parse_constant);
-    return -1;
-}
-
-PyDoc_STRVAR(scanner_doc, "JSON scanner object");
-
-static
-PyTypeObject PyScannerType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                    /* tp_internal */
-    "simplejson._speedups.Scanner",       /* tp_name */
-    sizeof(PyScannerObject), /* tp_basicsize */
-    0,                    /* tp_itemsize */
-    scanner_dealloc, /* tp_dealloc */
-    0,                    /* tp_print */
-    0,                    /* tp_getattr */
-    0,                    /* tp_setattr */
-    0,                    /* tp_compare */
-    0,                    /* tp_repr */
-    0,                    /* tp_as_number */
-    0,                    /* tp_as_sequence */
-    0,                    /* tp_as_mapping */
-    0,                    /* tp_hash */
-    scanner_call,         /* tp_call */
-    0,                    /* tp_str */
-    0,/* PyObject_GenericGetAttr, */                    /* tp_getattro */
-    0,/* PyObject_GenericSetAttr, */                    /* tp_setattro */
-    0,                    /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,   /* tp_flags */
-    scanner_doc,          /* tp_doc */
-    scanner_traverse,                    /* tp_traverse */
-    scanner_clear,                    /* tp_clear */
-    0,                    /* tp_richcompare */
-    0,                    /* tp_weaklistoffset */
-    0,                    /* tp_iter */
-    0,                    /* tp_iternext */
-    0,                    /* tp_methods */
-    scanner_members,                    /* tp_members */
-    0,                    /* tp_getset */
-    0,                    /* tp_base */
-    0,                    /* tp_dict */
-    0,                    /* tp_descr_get */
-    0,                    /* tp_descr_set */
-    0,                    /* tp_dictoffset */
-    scanner_init,                    /* tp_init */
-    0,/* PyType_GenericAlloc, */        /* tp_alloc */
-    scanner_new,          /* tp_new */
-    0,/* PyObject_GC_Del, */              /* tp_free */
-};
-
-static PyObject *
-encoder_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
-{
-    PyEncoderObject *s;
-    s = (PyEncoderObject *)type->tp_alloc(type, 0);
-    if (s != NULL) {
-        s->markers = NULL;
-        s->defaultfn = NULL;
-        s->encoder = NULL;
-        s->indent = NULL;
-        s->key_separator = NULL;
-        s->item_separator = NULL;
-        s->sort_keys = NULL;
-        s->skipkeys = NULL;
-        s->key_memo = NULL;
-    }
-    return (PyObject *)s;
-}
-
-static int
-encoder_init(PyObject *self, PyObject *args, PyObject *kwds)
-{
-    /* initialize Encoder object */
-    static char *kwlist[] = {"markers", "default", "encoder", "indent", "key_separator", "item_separator", "sort_keys", "skipkeys", "allow_nan", "key_memo", "use_decimal", NULL};
-
-    PyEncoderObject *s;
-    PyObject *markers, *defaultfn, *encoder, *indent, *key_separator;
-    PyObject *item_separator, *sort_keys, *skipkeys, *allow_nan, *key_memo, *use_decimal;
-
-    assert(PyEncoder_Check(self));
-    s = (PyEncoderObject *)self;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "OOOOOOOOOOO:make_encoder", kwlist,
-        &markers, &defaultfn, &encoder, &indent, &key_separator, &item_separator,
-        &sort_keys, &skipkeys, &allow_nan, &key_memo, &use_decimal))
-        return -1;
-
-    s->markers = markers;
-    s->defaultfn = defaultfn;
-    s->encoder = encoder;
-    s->indent = indent;
-    s->key_separator = key_separator;
-    s->item_separator = item_separator;
-    s->sort_keys = sort_keys;
-    s->skipkeys = skipkeys;
-    s->key_memo = key_memo;
-    s->fast_encode = (PyCFunction_Check(s->encoder) && PyCFunction_GetFunction(s->encoder) == (PyCFunction)py_encode_basestring_ascii);
-    s->allow_nan = PyObject_IsTrue(allow_nan);
-    s->use_decimal = PyObject_IsTrue(use_decimal);
-
-    Py_INCREF(s->markers);
-    Py_INCREF(s->defaultfn);
-    Py_INCREF(s->encoder);
-    Py_INCREF(s->indent);
-    Py_INCREF(s->key_separator);
-    Py_INCREF(s->item_separator);
-    Py_INCREF(s->sort_keys);
-    Py_INCREF(s->skipkeys);
-    Py_INCREF(s->key_memo);
-    return 0;
-}
-
-static PyObject *
-encoder_call(PyObject *self, PyObject *args, PyObject *kwds)
-{
-    /* Python callable interface to encode_listencode_obj */
-    static char *kwlist[] = {"obj", "_current_indent_level", NULL};
-    PyObject *obj;
-    PyObject *rval;
-    Py_ssize_t indent_level;
-    PyEncoderObject *s;
-    assert(PyEncoder_Check(self));
-    s = (PyEncoderObject *)self;
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO&:_iterencode", kwlist,
-        &obj, _convertPyInt_AsSsize_t, &indent_level))
-        return NULL;
-    rval = PyList_New(0);
-    if (rval == NULL)
-        return NULL;
-    if (encoder_listencode_obj(s, rval, obj, indent_level)) {
-        Py_DECREF(rval);
-        return NULL;
-    }
-    return rval;
-}
-
-static PyObject *
-_encoded_const(PyObject *obj)
-{
-    /* Return the JSON string representation of None, True, False */
-    if (obj == Py_None) {
-        static PyObject *s_null = NULL;
-        if (s_null == NULL) {
-            s_null = PyString_InternFromString("null");
-        }
-        Py_INCREF(s_null);
-        return s_null;
-    }
-    else if (obj == Py_True) {
-        static PyObject *s_true = NULL;
-        if (s_true == NULL) {
-            s_true = PyString_InternFromString("true");
-        }
-        Py_INCREF(s_true);
-        return s_true;
-    }
-    else if (obj == Py_False) {
-        static PyObject *s_false = NULL;
-        if (s_false == NULL) {
-            s_false = PyString_InternFromString("false");
-        }
-        Py_INCREF(s_false);
-        return s_false;
-    }
-    else {
-        PyErr_SetString(PyExc_ValueError, "not a const");
-        return NULL;
-    }
-}
-
-static PyObject *
-encoder_encode_float(PyEncoderObject *s, PyObject *obj)
-{
-    /* Return the JSON representation of a PyFloat */
-    double i = PyFloat_AS_DOUBLE(obj);
-    if (!Py_IS_FINITE(i)) {
-        if (!s->allow_nan) {
-            PyErr_SetString(PyExc_ValueError, "Out of range float values are not JSON compliant");
-            return NULL;
-        }
-        if (i > 0) {
-            return PyString_FromString("Infinity");
-        }
-        else if (i < 0) {
-            return PyString_FromString("-Infinity");
-        }
-        else {
-            return PyString_FromString("NaN");
-        }
-    }
-    /* Use a better float format here? */
-    return PyObject_Repr(obj);
-}
-
-static PyObject *
-encoder_encode_string(PyEncoderObject *s, PyObject *obj)
-{
-    /* Return the JSON representation of a string */
-    if (s->fast_encode)
-        return py_encode_basestring_ascii(NULL, obj);
-    else
-        return PyObject_CallFunctionObjArgs(s->encoder, obj, NULL);
-}
-
-static int
-_steal_list_append(PyObject *lst, PyObject *stolen)
-{
-    /* Append stolen and then decrement its reference count */
-    int rval = PyList_Append(lst, stolen);
-    Py_DECREF(stolen);
-    return rval;
-}
-
-static int
-encoder_listencode_obj(PyEncoderObject *s, PyObject *rval, PyObject *obj, Py_ssize_t indent_level)
-{
-    /* Encode Python object obj to a JSON term, rval is a PyList */
-    PyObject *newobj;
-    int rv;
-
-    if (obj == Py_None || obj == Py_True || obj == Py_False) {
-        PyObject *cstr = _encoded_const(obj);
-        if (cstr == NULL)
-            return -1;
-        return _steal_list_append(rval, cstr);
-    }
-    else if (PyString_Check(obj) || PyUnicode_Check(obj))
-    {
-        PyObject *encoded = encoder_encode_string(s, obj);
-        if (encoded == NULL)
-            return -1;
-        return _steal_list_append(rval, encoded);
-    }
-    else if (PyInt_Check(obj) || PyLong_Check(obj)) {
-        PyObject *encoded = PyObject_Str(obj);
-        if (encoded == NULL)
-            return -1;
-        return _steal_list_append(rval, encoded);
-    }
-    else if (PyFloat_Check(obj)) {
-        PyObject *encoded = encoder_encode_float(s, obj);
-        if (encoded == NULL)
-            return -1;
-        return _steal_list_append(rval, encoded);
-    }
-    else if (PyList_Check(obj) || PyTuple_Check(obj)) {
-        return encoder_listencode_list(s, rval, obj, indent_level);
-    }
-    else if (PyDict_Check(obj)) {
-        return encoder_listencode_dict(s, rval, obj, indent_level);
-    }
-    else if (s->use_decimal && Decimal_Check(obj)) {
-        PyObject *encoded = PyObject_Str(obj);
-        if (encoded == NULL)
-            return -1;
-        return _steal_list_append(rval, encoded);
-    }
-    else {
-        PyObject *ident = NULL;
-        if (s->markers != Py_None) {
-            int has_key;
-            ident = PyLong_FromVoidPtr(obj);
-            if (ident == NULL)
-                return -1;
-            has_key = PyDict_Contains(s->markers, ident);
-            if (has_key) {
-                if (has_key != -1)
-                    PyErr_SetString(PyExc_ValueError, "Circular reference detected");
-                Py_DECREF(ident);
-                return -1;
-            }
-            if (PyDict_SetItem(s->markers, ident, obj)) {
-                Py_DECREF(ident);
-                return -1;
-            }
-        }
-        newobj = PyObject_CallFunctionObjArgs(s->defaultfn, obj, NULL);
-        if (newobj == NULL) {
-            Py_XDECREF(ident);
-            return -1;
-        }
-        rv = encoder_listencode_obj(s, rval, newobj, indent_level);
-        Py_DECREF(newobj);
-        if (rv) {
-            Py_XDECREF(ident);
-            return -1;
-        }
-        if (ident != NULL) {
-            if (PyDict_DelItem(s->markers, ident)) {
-                Py_XDECREF(ident);
-                return -1;
-            }
-            Py_XDECREF(ident);
-        }
-        return rv;
-    }
-}
-
-static int
-encoder_listencode_dict(PyEncoderObject *s, PyObject *rval, PyObject *dct, Py_ssize_t indent_level)
-{
-    /* Encode Python dict dct a JSON term, rval is a PyList */
-    static PyObject *open_dict = NULL;
-    static PyObject *close_dict = NULL;
-    static PyObject *empty_dict = NULL;
-    static PyObject *iteritems = NULL;
-    PyObject *kstr = NULL;
-    PyObject *ident = NULL;
-    PyObject *key, *value;
-    PyObject *iter = NULL;
-    PyObject *item = NULL;
-    PyObject *encoded = NULL;
-    int skipkeys;
-    Py_ssize_t idx;
-
-    if (open_dict == NULL || close_dict == NULL || empty_dict == NULL || iteritems == NULL) {
-        open_dict = PyString_InternFromString("{");
-        close_dict = PyString_InternFromString("}");
-        empty_dict = PyString_InternFromString("{}");
-        iteritems = PyString_InternFromString("iteritems");
-        if (open_dict == NULL || close_dict == NULL || empty_dict == NULL || iteritems == NULL)
-            return -1;
-    }
-    if (PyDict_Size(dct) == 0)
-        return PyList_Append(rval, empty_dict);
-
-    if (s->markers != Py_None) {
-        int has_key;
-        ident = PyLong_FromVoidPtr(dct);
-        if (ident == NULL)
-            goto bail;
-        has_key = PyDict_Contains(s->markers, ident);
-        if (has_key) {
-            if (has_key != -1)
-                PyErr_SetString(PyExc_ValueError, "Circular reference detected");
-            goto bail;
-        }
-        if (PyDict_SetItem(s->markers, ident, dct)) {
-            goto bail;
-        }
-    }
-
-    if (PyList_Append(rval, open_dict))
-        goto bail;
-
-    if (s->indent != Py_None) {
-        /* TODO: DOES NOT RUN */
-        indent_level += 1;
-        /*
-            newline_indent = '\n' + (_indent * _current_indent_level)
-            separator = _item_separator + newline_indent
-            buf += newline_indent
-        */
-    }
-
-    /* TODO: C speedup not implemented for sort_keys */
-
-    skipkeys = PyObject_IsTrue(s->skipkeys);
-    idx = 0;
-    iter = PyObject_CallMethodObjArgs(dct, iteritems, NULL);
-    if (iter == NULL)
-        goto bail;
-    while ((item = PyIter_Next(iter))) {
-
-        key = PyTuple_GetItem(item, 0);
-        if (key == NULL)
-            goto bail;
-        value = PyTuple_GetItem(item, 1);
-        if (value == NULL)
-            goto bail;
-        
-        encoded = PyDict_GetItem(s->key_memo, key);
-        if (encoded != NULL) {
-            Py_INCREF(encoded);
-        }
-        else if (PyString_Check(key) || PyUnicode_Check(key)) {
-            Py_INCREF(key);
-            kstr = key;
-        }
-        else if (PyFloat_Check(key)) {
-            kstr = encoder_encode_float(s, key);
-            if (kstr == NULL)
-                goto bail;
-        }
-        else if (PyInt_Check(key) || PyLong_Check(key)) {
-            kstr = PyObject_Str(key);
-            if (kstr == NULL)
-                goto bail;
-        }
-        else if (key == Py_True || key == Py_False || key == Py_None) {
-            kstr = _encoded_const(key);
-            if (kstr == NULL)
-                goto bail;
-        }
-        else if (skipkeys) {
-            Py_DECREF(item);
-            continue;
-        }
-        else {
-            /* TODO: include repr of key */
-            PyErr_SetString(PyExc_ValueError, "keys must be a string");
-            goto bail;
-        }
-
-        if (idx) {
-            if (PyList_Append(rval, s->item_separator))
-                goto bail;
-        }
-
-        if (encoded == NULL) {
-            encoded = encoder_encode_string(s, kstr);
-            Py_CLEAR(kstr);
-            if (encoded == NULL)
-                goto bail;
-            if (PyDict_SetItem(s->key_memo, key, encoded))
-                goto bail;
-        }
-        if (PyList_Append(rval, encoded)) {
-            goto bail;
-        }
-        Py_CLEAR(encoded);
-        if (PyList_Append(rval, s->key_separator))
-            goto bail;
-        if (encoder_listencode_obj(s, rval, value, indent_level))
-            goto bail;
-        Py_CLEAR(item);
-        idx += 1;
-    }
-    Py_CLEAR(iter);
-    if (PyErr_Occurred())
-        goto bail;
-    if (ident != NULL) {
-        if (PyDict_DelItem(s->markers, ident))
-            goto bail;
-        Py_CLEAR(ident);
-    }
-    if (s->indent != Py_None) {
-        /* TODO: DOES NOT RUN */
-        indent_level -= 1;
-        /*
-            yield '\n' + (_indent * _current_indent_level)
-        */
-    }
-    if (PyList_Append(rval, close_dict))
-        goto bail;
-    return 0;
-
-bail:
-    Py_XDECREF(encoded);
-    Py_XDECREF(item);
-    Py_XDECREF(iter);
-    Py_XDECREF(kstr);
-    Py_XDECREF(ident);
-    return -1;
-}
-
-
-static int
-encoder_listencode_list(PyEncoderObject *s, PyObject *rval, PyObject *seq, Py_ssize_t indent_level)
-{
-    /* Encode Python list seq to a JSON term, rval is a PyList */
-    static PyObject *open_array = NULL;
-    static PyObject *close_array = NULL;
-    static PyObject *empty_array = NULL;
-    PyObject *ident = NULL;
-    PyObject *iter = NULL;
-    PyObject *obj = NULL;
-    int is_true;
-    int i = 0;
-
-    if (open_array == NULL || close_array == NULL || empty_array == NULL) {
-        open_array = PyString_InternFromString("[");
-        close_array = PyString_InternFromString("]");
-        empty_array = PyString_InternFromString("[]");
-        if (open_array == NULL || close_array == NULL || empty_array == NULL)
-            return -1;
-    }
-    ident = NULL;
-    is_true = PyObject_IsTrue(seq);
-    if (is_true == -1)
-        return -1;
-    else if (is_true == 0)
-        return PyList_Append(rval, empty_array);
-
-    if (s->markers != Py_None) {
-        int has_key;
-        ident = PyLong_FromVoidPtr(seq);
-        if (ident == NULL)
-            goto bail;
-        has_key = PyDict_Contains(s->markers, ident);
-        if (has_key) {
-            if (has_key != -1)
-                PyErr_SetString(PyExc_ValueError, "Circular reference detected");
-            goto bail;
-        }
-        if (PyDict_SetItem(s->markers, ident, seq)) {
-            goto bail;
-        }
-    }
-
-    iter = PyObject_GetIter(seq);
-    if (iter == NULL)
-        goto bail;
-
-    if (PyList_Append(rval, open_array))
-        goto bail;
-    if (s->indent != Py_None) {
-        /* TODO: DOES NOT RUN */
-        indent_level += 1;
-        /*
-            newline_indent = '\n' + (_indent * _current_indent_level)
-            separator = _item_separator + newline_indent
-            buf += newline_indent
-        */
-    }
-    while ((obj = PyIter_Next(iter))) {
-        if (i) {
-            if (PyList_Append(rval, s->item_separator))
-                goto bail;
-        }
-        if (encoder_listencode_obj(s, rval, obj, indent_level))
-            goto bail;
-        i++;
-        Py_CLEAR(obj);
-    }
-    Py_CLEAR(iter);
-    if (PyErr_Occurred())
-        goto bail;
-    if (ident != NULL) {
-        if (PyDict_DelItem(s->markers, ident))
-            goto bail;
-        Py_CLEAR(ident);
-    }
-    if (s->indent != Py_None) {
-        /* TODO: DOES NOT RUN */
-        indent_level -= 1;
-        /*
-            yield '\n' + (_indent * _current_indent_level)
-        */
-    }
-    if (PyList_Append(rval, close_array))
-        goto bail;
-    return 0;
-
-bail:
-    Py_XDECREF(obj);
-    Py_XDECREF(iter);
-    Py_XDECREF(ident);
-    return -1;
-}
-
-static void
-encoder_dealloc(PyObject *self)
-{
-    /* Deallocate Encoder */
-    encoder_clear(self);
-    Py_TYPE(self)->tp_free(self);
-}
-
-static int
-encoder_traverse(PyObject *self, visitproc visit, void *arg)
-{
-    PyEncoderObject *s;
-    assert(PyEncoder_Check(self));
-    s = (PyEncoderObject *)self;
-    Py_VISIT(s->markers);
-    Py_VISIT(s->defaultfn);
-    Py_VISIT(s->encoder);
-    Py_VISIT(s->indent);
-    Py_VISIT(s->key_separator);
-    Py_VISIT(s->item_separator);
-    Py_VISIT(s->sort_keys);
-    Py_VISIT(s->skipkeys);
-    Py_VISIT(s->key_memo);
-    return 0;
-}
-
-static int
-encoder_clear(PyObject *self)
-{
-    /* Deallocate Encoder */
-    PyEncoderObject *s;
-    assert(PyEncoder_Check(self));
-    s = (PyEncoderObject *)self;
-    Py_CLEAR(s->markers);
-    Py_CLEAR(s->defaultfn);
-    Py_CLEAR(s->encoder);
-    Py_CLEAR(s->indent);
-    Py_CLEAR(s->key_separator);
-    Py_CLEAR(s->item_separator);
-    Py_CLEAR(s->sort_keys);
-    Py_CLEAR(s->skipkeys);
-    Py_CLEAR(s->key_memo);
-    return 0;
-}
-
-PyDoc_STRVAR(encoder_doc, "_iterencode(obj, _current_indent_level) -> iterable");
-
-static
-PyTypeObject PyEncoderType = {
-    PyObject_HEAD_INIT(NULL)
-    0,                    /* tp_internal */
-    "simplejson._speedups.Encoder",       /* tp_name */
-    sizeof(PyEncoderObject), /* tp_basicsize */
-    0,                    /* tp_itemsize */
-    encoder_dealloc, /* tp_dealloc */
-    0,                    /* tp_print */
-    0,                    /* tp_getattr */
-    0,                    /* tp_setattr */
-    0,                    /* tp_compare */
-    0,                    /* tp_repr */
-    0,                    /* tp_as_number */
-    0,                    /* tp_as_sequence */
-    0,                    /* tp_as_mapping */
-    0,                    /* tp_hash */
-    encoder_call,         /* tp_call */
-    0,                    /* tp_str */
-    0,                    /* tp_getattro */
-    0,                    /* tp_setattro */
-    0,                    /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,   /* tp_flags */
-    encoder_doc,          /* tp_doc */
-    encoder_traverse,     /* tp_traverse */
-    encoder_clear,        /* tp_clear */
-    0,                    /* tp_richcompare */
-    0,                    /* tp_weaklistoffset */
-    0,                    /* tp_iter */
-    0,                    /* tp_iternext */
-    0,                    /* tp_methods */
-    encoder_members,      /* tp_members */
-    0,                    /* tp_getset */
-    0,                    /* tp_base */
-    0,                    /* tp_dict */
-    0,                    /* tp_descr_get */
-    0,                    /* tp_descr_set */
-    0,                    /* tp_dictoffset */
-    encoder_init,         /* tp_init */
-    0,                    /* tp_alloc */
-    encoder_new,          /* tp_new */
-    0,                    /* tp_free */
-};
-
-static PyMethodDef speedups_methods[] = {
-    {"encode_basestring_ascii",
-        (PyCFunction)py_encode_basestring_ascii,
-        METH_O,
-        pydoc_encode_basestring_ascii},
-    {"scanstring",
-        (PyCFunction)py_scanstring,
-        METH_VARARGS,
-        pydoc_scanstring},
-    {NULL, NULL, 0, NULL}
-};
-
-PyDoc_STRVAR(module_doc,
-"simplejson speedups\n");
-
-void
-init_speedups(void)
-{
-    PyObject *m, *decimal;
-    PyScannerType.tp_new = PyType_GenericNew;
-    if (PyType_Ready(&PyScannerType) < 0)
-        return;
-    PyEncoderType.tp_new = PyType_GenericNew;
-    if (PyType_Ready(&PyEncoderType) < 0)
-        return;
-
-    decimal = PyImport_ImportModule("decimal");
-    if (decimal == NULL)
-        return;
-    DecimalTypePtr = (PyTypeObject*)PyObject_GetAttrString(decimal, "Decimal");
-    Py_DECREF(decimal);
-    if (DecimalTypePtr == NULL)
-        return;
-
-    m = Py_InitModule3("_speedups", speedups_methods, module_doc);
-    Py_INCREF((PyObject*)&PyScannerType);
-    PyModule_AddObject(m, "make_scanner", (PyObject*)&PyScannerType);
-    Py_INCREF((PyObject*)&PyEncoderType);
-    PyModule_AddObject(m, "make_encoder", (PyObject*)&PyEncoderType);
-}
diff --git a/tablib/packages/simplejson/decoder.py b/tablib/packages/simplejson/decoder.py
deleted file mode 100644
index 4cf4015..0000000
--- a/tablib/packages/simplejson/decoder.py
+++ /dev/null
@@ -1,421 +0,0 @@
-"""Implementation of JSONDecoder
-"""
-import re
-import sys
-import struct
-
-from simplejson.scanner import make_scanner
-def _import_c_scanstring():
-    try:
-        from simplejson._speedups import scanstring
-        return scanstring
-    except ImportError:
-        return None
-c_scanstring = _import_c_scanstring()
-
-__all__ = ['JSONDecoder']
-
-FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL
-
-def _floatconstants():
-    _BYTES = '7FF80000000000007FF0000000000000'.decode('hex')
-    # The struct module in Python 2.4 would get frexp() out of range here
-    # when an endian is specified in the format string. Fixed in Python 2.5+
-    if sys.byteorder != 'big':
-        _BYTES = _BYTES[:8][::-1] + _BYTES[8:][::-1]
-    nan, inf = struct.unpack('dd', _BYTES)
-    return nan, inf, -inf
-
-NaN, PosInf, NegInf = _floatconstants()
-
-
-class JSONDecodeError(ValueError):
-    """Subclass of ValueError with the following additional properties:
-    
-    msg: The unformatted error message
-    doc: The JSON document being parsed
-    pos: The start index of doc where parsing failed
-    end: The end index of doc where parsing failed (may be None)
-    lineno: The line corresponding to pos
-    colno: The column corresponding to pos
-    endlineno: The line corresponding to end (may be None)
-    endcolno: The column corresponding to end (may be None)
-    
-    """
-    def __init__(self, msg, doc, pos, end=None):
-        ValueError.__init__(self, errmsg(msg, doc, pos, end=end))
-        self.msg = msg
-        self.doc = doc
-        self.pos = pos
-        self.end = end
-        self.lineno, self.colno = linecol(doc, pos)
-        if end is not None:
-            self.endlineno, self.endcolno = linecol(doc, pos)
-        else:
-            self.endlineno, self.endcolno = None, None
-
-
-def linecol(doc, pos):
-    lineno = doc.count('\n', 0, pos) + 1
-    if lineno == 1:
-        colno = pos
-    else:
-        colno = pos - doc.rindex('\n', 0, pos)
-    return lineno, colno
-
-
-def errmsg(msg, doc, pos, end=None):
-    # Note that this function is called from _speedups
-    lineno, colno = linecol(doc, pos)
-    if end is None:
-        #fmt = '{0}: line {1} column {2} (char {3})'
-        #return fmt.format(msg, lineno, colno, pos)
-        fmt = '%s: line %d column %d (char %d)'
-        return fmt % (msg, lineno, colno, pos)
-    endlineno, endcolno = linecol(doc, end)
-    #fmt = '{0}: line {1} column {2} - line {3} column {4} (char {5} - {6})'
-    #return fmt.format(msg, lineno, colno, endlineno, endcolno, pos, end)
-    fmt = '%s: line %d column %d - line %d column %d (char %d - %d)'
-    return fmt % (msg, lineno, colno, endlineno, endcolno, pos, end)
-
-
-_CONSTANTS = {
-    '-Infinity': NegInf,
-    'Infinity': PosInf,
-    'NaN': NaN,
-}
-
-STRINGCHUNK = re.compile(r'(.*?)(["\\\x00-\x1f])', FLAGS)
-BACKSLASH = {
-    '"': u'"', '\\': u'\\', '/': u'/',
-    'b': u'\b', 'f': u'\f', 'n': u'\n', 'r': u'\r', 't': u'\t',
-}
-
-DEFAULT_ENCODING = "utf-8"
-
-def py_scanstring(s, end, encoding=None, strict=True,
-        _b=BACKSLASH, _m=STRINGCHUNK.match):
-    """Scan the string s for a JSON string. End is the index of the
-    character in s after the quote that started the JSON string.
-    Unescapes all valid JSON string escape sequences and raises ValueError
-    on attempt to decode an invalid string. If strict is False then literal
-    control characters are allowed in the string.
-
-    Returns a tuple of the decoded string and the index of the character in s
-    after the end quote."""
-    if encoding is None:
-        encoding = DEFAULT_ENCODING
-    chunks = []
-    _append = chunks.append
-    begin = end - 1
-    while 1:
-        chunk = _m(s, end)
-        if chunk is None:
-            raise JSONDecodeError(
-                "Unterminated string starting at", s, begin)
-        end = chunk.end()
-        content, terminator = chunk.groups()
-        # Content is contains zero or more unescaped string characters
-        if content:
-            if not isinstance(content, unicode):
-                content = unicode(content, encoding)
-            _append(content)
-        # Terminator is the end of string, a literal control character,
-        # or a backslash denoting that an escape sequence follows
-        if terminator == '"':
-            break
-        elif terminator != '\\':
-            if strict:
-                msg = "Invalid control character %r at" % (terminator,)
-                #msg = "Invalid control character {0!r} at".format(terminator)
-                raise JSONDecodeError(msg, s, end)
-            else:
-                _append(terminator)
-                continue
-        try:
-            esc = s[end]
-        except IndexError:
-            raise JSONDecodeError(
-                "Unterminated string starting at", s, begin)
-        # If not a unicode escape sequence, must be in the lookup table
-        if esc != 'u':
-            try:
-                char = _b[esc]
-            except KeyError:
-                msg = "Invalid \\escape: " + repr(esc)
-                raise JSONDecodeError(msg, s, end)
-            end += 1
-        else:
-            # Unicode escape sequence
-            esc = s[end + 1:end + 5]
-            next_end = end + 5
-            if len(esc) != 4:
-                msg = "Invalid \\uXXXX escape"
-                raise JSONDecodeError(msg, s, end)
-            uni = int(esc, 16)
-            # Check for surrogate pair on UCS-4 systems
-            if 0xd800 <= uni <= 0xdbff and sys.maxunicode > 65535:
-                msg = "Invalid \\uXXXX\\uXXXX surrogate pair"
-                if not s[end + 5:end + 7] == '\\u':
-                    raise JSONDecodeError(msg, s, end)
-                esc2 = s[end + 7:end + 11]
-                if len(esc2) != 4:
-                    raise JSONDecodeError(msg, s, end)
-                uni2 = int(esc2, 16)
-                uni = 0x10000 + (((uni - 0xd800) << 10) | (uni2 - 0xdc00))
-                next_end += 6
-            char = unichr(uni)
-            end = next_end
-        # Append the unescaped character
-        _append(char)
-    return u''.join(chunks), end
-
-
-# Use speedup if available
-scanstring = c_scanstring or py_scanstring
-
-WHITESPACE = re.compile(r'[ \t\n\r]*', FLAGS)
-WHITESPACE_STR = ' \t\n\r'
-
-def JSONObject((s, end), encoding, strict, scan_once, object_hook,
-        object_pairs_hook, memo=None,
-        _w=WHITESPACE.match, _ws=WHITESPACE_STR):
-    # Backwards compatibility
-    if memo is None:
-        memo = {}
-    memo_get = memo.setdefault
-    pairs = []
-    # Use a slice to prevent IndexError from being raised, the following
-    # check will raise a more specific ValueError if the string is empty
-    nextchar = s[end:end + 1]
-    # Normally we expect nextchar == '"'
-    if nextchar != '"':
-        if nextchar in _ws:
-            end = _w(s, end).end()
-            nextchar = s[end:end + 1]
-        # Trivial empty object
-        if nextchar == '}':
-            if object_pairs_hook is not None:
-                result = object_pairs_hook(pairs)
-                return result, end
-            pairs = {}
-            if object_hook is not None:
-                pairs = object_hook(pairs)
-            return pairs, end + 1
-        elif nextchar != '"':
-            raise JSONDecodeError("Expecting property name", s, end)
-    end += 1
-    while True:
-        key, end = scanstring(s, end, encoding, strict)
-        key = memo_get(key, key)
-
-        # To skip some function call overhead we optimize the fast paths where
-        # the JSON key separator is ": " or just ":".
-        if s[end:end + 1] != ':':
-            end = _w(s, end).end()
-            if s[end:end + 1] != ':':
-                raise JSONDecodeError("Expecting : delimiter", s, end)
-
-        end += 1
-
-        try:
-            if s[end] in _ws:
-                end += 1
-                if s[end] in _ws:
-                    end = _w(s, end + 1).end()
-        except IndexError:
-            pass
-
-        try:
-            value, end = scan_once(s, end)
-        except StopIteration:
-            raise JSONDecodeError("Expecting object", s, end)
-        pairs.append((key, value))
-
-        try:
-            nextchar = s[end]
-            if nextchar in _ws:
-                end = _w(s, end + 1).end()
-                nextchar = s[end]
-        except IndexError:
-            nextchar = ''
-        end += 1
-
-        if nextchar == '}':
-            break
-        elif nextchar != ',':
-            raise JSONDecodeError("Expecting , delimiter", s, end - 1)
-
-        try:
-            nextchar = s[end]
-            if nextchar in _ws:
-                end += 1
-                nextchar = s[end]
-                if nextchar in _ws:
-                    end = _w(s, end + 1).end()
-                    nextchar = s[end]
-        except IndexError:
-            nextchar = ''
-
-        end += 1
-        if nextchar != '"':
-            raise JSONDecodeError("Expecting property name", s, end - 1)
-
-    if object_pairs_hook is not None:
-        result = object_pairs_hook(pairs)
-        return result, end
-    pairs = dict(pairs)
-    if object_hook is not None:
-        pairs = object_hook(pairs)
-    return pairs, end
-
-def JSONArray((s, end), scan_once, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
-    values = []
-    nextchar = s[end:end + 1]
-    if nextchar in _ws:
-        end = _w(s, end + 1).end()
-        nextchar = s[end:end + 1]
-    # Look-ahead for trivial empty array
-    if nextchar == ']':
-        return values, end + 1
-    _append = values.append
-    while True:
-        try:
-            value, end = scan_once(s, end)
-        except StopIteration:
-            raise JSONDecodeError("Expecting object", s, end)
-        _append(value)
-        nextchar = s[end:end + 1]
-        if nextchar in _ws:
-            end = _w(s, end + 1).end()
-            nextchar = s[end:end + 1]
-        end += 1
-        if nextchar == ']':
-            break
-        elif nextchar != ',':
-            raise JSONDecodeError("Expecting , delimiter", s, end)
-
-        try:
-            if s[end] in _ws:
-                end += 1
-                if s[end] in _ws:
-                    end = _w(s, end + 1).end()
-        except IndexError:
-            pass
-
-    return values, end
-
-class JSONDecoder(object):
-    """Simple JSON <http://json.org> decoder
-
-    Performs the following translations in decoding by default:
-
-    +---------------+-------------------+
-    | JSON          | Python            |
-    +===============+===================+
-    | object        | dict              |
-    +---------------+-------------------+
-    | array         | list              |
-    +---------------+-------------------+
-    | string        | unicode           |
-    +---------------+-------------------+
-    | number (int)  | int, long         |
-    +---------------+-------------------+
-    | number (real) | float             |
-    +---------------+-------------------+
-    | true          | True              |
-    +---------------+-------------------+
-    | false         | False             |
-    +---------------+-------------------+
-    | null          | None              |
-    +---------------+-------------------+
-
-    It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as
-    their corresponding ``float`` values, which is outside the JSON spec.
-
-    """
-
-    def __init__(self, encoding=None, object_hook=None, parse_float=None,
-            parse_int=None, parse_constant=None, strict=True,
-            object_pairs_hook=None):
-        """
-        *encoding* determines the encoding used to interpret any
-        :class:`str` objects decoded by this instance (``'utf-8'`` by
-        default).  It has no effect when decoding :class:`unicode` objects.
-
-        Note that currently only encodings that are a superset of ASCII work,
-        strings of other encodings should be passed in as :class:`unicode`.
-
-        *object_hook*, if specified, will be called with the result of every
-        JSON object decoded and its return value will be used in place of the
-        given :class:`dict`.  This can be used to provide custom
-        deserializations (e.g. to support JSON-RPC class hinting).
-
-        *object_pairs_hook* is an optional function that will be called with
-        the result of any object literal decode with an ordered list of pairs.
-        The return value of *object_pairs_hook* will be used instead of the
-        :class:`dict`.  This feature can be used to implement custom decoders
-        that rely on the order that the key and value pairs are decoded (for
-        example, :func:`collections.OrderedDict` will remember the order of
-        insertion). If *object_hook* is also defined, the *object_pairs_hook*
-        takes priority.
-
-        *parse_float*, if specified, will be called with the string of every
-        JSON float to be decoded.  By default, this is equivalent to
-        ``float(num_str)``. This can be used to use another datatype or parser
-        for JSON floats (e.g. :class:`decimal.Decimal`).
-
-        *parse_int*, if specified, will be called with the string of every
-        JSON int to be decoded.  By default, this is equivalent to
-        ``int(num_str)``.  This can be used to use another datatype or parser
-        for JSON integers (e.g. :class:`float`).
-
-        *parse_constant*, if specified, will be called with one of the
-        following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.  This
-        can be used to raise an exception if invalid JSON numbers are
-        encountered.
-
-        *strict* controls the parser's behavior when it encounters an
-        invalid control character in a string. The default setting of
-        ``True`` means that unescaped control characters are parse errors, if
-        ``False`` then control characters will be allowed in strings.
-
-        """
-        self.encoding = encoding
-        self.object_hook = object_hook
-        self.object_pairs_hook = object_pairs_hook
-        self.parse_float = parse_float or float
-        self.parse_int = parse_int or int
-        self.parse_constant = parse_constant or _CONSTANTS.__getitem__
-        self.strict = strict
-        self.parse_object = JSONObject
-        self.parse_array = JSONArray
-        self.parse_string = scanstring
-        self.memo = {}
-        self.scan_once = make_scanner(self)
-
-    def decode(self, s, _w=WHITESPACE.match):
-        """Return the Python representation of ``s`` (a ``str`` or ``unicode``
-        instance containing a JSON document)
-
-        """
-        obj, end = self.raw_decode(s, idx=_w(s, 0).end())
-        end = _w(s, end).end()
-        if end != len(s):
-            raise JSONDecodeError("Extra data", s, end, len(s))
-        return obj
-
-    def raw_decode(self, s, idx=0):
-        """Decode a JSON document from ``s`` (a ``str`` or ``unicode``
-        beginning with a JSON document) and return a 2-tuple of the Python
-        representation and the index in ``s`` where the document ended.
-
-        This can be used to decode a JSON document from a string that may
-        have extraneous data at the end.
-
-        """
-        try:
-            obj, end = self.scan_once(s, idx)
-        except StopIteration:
-            raise JSONDecodeError("No JSON object could be decoded", s, idx)
-        return obj, end
diff --git a/tablib/packages/simplejson/encoder.py b/tablib/packages/simplejson/encoder.py
deleted file mode 100644
index cab8456..0000000
--- a/tablib/packages/simplejson/encoder.py
+++ /dev/null
@@ -1,501 +0,0 @@
-"""Implementation of JSONEncoder
-"""
-import re
-from decimal import Decimal
-
-def _import_speedups():
-    try:
-        from simplejson import _speedups
-        return _speedups.encode_basestring_ascii, _speedups.make_encoder
-    except ImportError:
-        return None, None
-c_encode_basestring_ascii, c_make_encoder = _import_speedups()
-
-from simplejson.decoder import PosInf
-
-ESCAPE = re.compile(r'[\x00-\x1f\\"\b\f\n\r\t]')
-ESCAPE_ASCII = re.compile(r'([\\"]|[^\ -~])')
-HAS_UTF8 = re.compile(r'[\x80-\xff]')
-ESCAPE_DCT = {
-    '\\': '\\\\',
-    '"': '\\"',
-    '\b': '\\b',
-    '\f': '\\f',
-    '\n': '\\n',
-    '\r': '\\r',
-    '\t': '\\t',
-}
-for i in range(0x20):
-    #ESCAPE_DCT.setdefault(chr(i), '\\u{0:04x}'.format(i))
-    ESCAPE_DCT.setdefault(chr(i), '\\u%04x' % (i,))
-
-FLOAT_REPR = repr
-
-def encode_basestring(s):
-    """Return a JSON representation of a Python string
-
-    """
-    if isinstance(s, str) and HAS_UTF8.search(s) is not None:
-        s = s.decode('utf-8')
-    def replace(match):
-        return ESCAPE_DCT[match.group(0)]
-    return u'"' + ESCAPE.sub(replace, s) + u'"'
-
-
-def py_encode_basestring_ascii(s):
-    """Return an ASCII-only JSON representation of a Python string
-
-    """
-    if isinstance(s, str) and HAS_UTF8.search(s) is not None:
-        s = s.decode('utf-8')
-    def replace(match):
-        s = match.group(0)
-        try:
-            return ESCAPE_DCT[s]
-        except KeyError:
-            n = ord(s)
-            if n < 0x10000:
-                #return '\\u{0:04x}'.format(n)
-                return '\\u%04x' % (n,)
-            else:
-                # surrogate pair
-                n -= 0x10000
-                s1 = 0xd800 | ((n >> 10) & 0x3ff)
-                s2 = 0xdc00 | (n & 0x3ff)
-                #return '\\u{0:04x}\\u{1:04x}'.format(s1, s2)
-                return '\\u%04x\\u%04x' % (s1, s2)
-    return '"' + str(ESCAPE_ASCII.sub(replace, s)) + '"'
-
-
-encode_basestring_ascii = (
-    c_encode_basestring_ascii or py_encode_basestring_ascii)
-
-class JSONEncoder(object):
-    """Extensible JSON <http://json.org> encoder for Python data structures.
-
-    Supports the following objects and types by default:
-
-    +-------------------+---------------+
-    | Python            | JSON          |
-    +===================+===============+
-    | dict              | object        |
-    +-------------------+---------------+
-    | list, tuple       | array         |
-    +-------------------+---------------+
-    | str, unicode      | string        |
-    +-------------------+---------------+
-    | int, long, float  | number        |
-    +-------------------+---------------+
-    | True              | true          |
-    +-------------------+---------------+
-    | False             | false         |
-    +-------------------+---------------+
-    | None              | null          |
-    +-------------------+---------------+
-
-    To extend this to recognize other objects, subclass and implement a
-    ``.default()`` method with another method that returns a serializable
-    object for ``o`` if possible, otherwise it should call the superclass
-    implementation (to raise ``TypeError``).
-
-    """
-    item_separator = ', '
-    key_separator = ': '
-    def __init__(self, skipkeys=False, ensure_ascii=True,
-            check_circular=True, allow_nan=True, sort_keys=False,
-            indent=None, separators=None, encoding='utf-8', default=None,
-            use_decimal=False):
-        """Constructor for JSONEncoder, with sensible defaults.
-
-        If skipkeys is false, then it is a TypeError to attempt
-        encoding of keys that are not str, int, long, float or None.  If
-        skipkeys is True, such items are simply skipped.
-
-        If ensure_ascii is true, the output is guaranteed to be str
-        objects with all incoming unicode characters escaped.  If
-        ensure_ascii is false, the output will be unicode object.
-
-        If check_circular is true, then lists, dicts, and custom encoded
-        objects will be checked for circular references during encoding to
-        prevent an infinite recursion (which would cause an OverflowError).
-        Otherwise, no such check takes place.
-
-        If allow_nan is true, then NaN, Infinity, and -Infinity will be
-        encoded as such.  This behavior is not JSON specification compliant,
-        but is consistent with most JavaScript based encoders and decoders.
-        Otherwise, it will be a ValueError to encode such floats.
-
-        If sort_keys is true, then the output of dictionaries will be
-        sorted by key; this is useful for regression tests to ensure
-        that JSON serializations can be compared on a day-to-day basis.
-
-        If indent is a string, then JSON array elements and object members
-        will be pretty-printed with a newline followed by that string repeated
-        for each level of nesting. ``None`` (the default) selects the most compact
-        representation without any newlines. For backwards compatibility with
-        versions of simplejson earlier than 2.1.0, an integer is also accepted
-        and is converted to a string with that many spaces.
-
-        If specified, separators should be a (item_separator, key_separator)
-        tuple.  The default is (', ', ': ').  To get the most compact JSON
-        representation you should specify (',', ':') to eliminate whitespace.
-
-        If specified, default is a function that gets called for objects
-        that can't otherwise be serialized.  It should return a JSON encodable
-        version of the object or raise a ``TypeError``.
-
-        If encoding is not None, then all input strings will be
-        transformed into unicode using that encoding prior to JSON-encoding.
-        The default is UTF-8.
-        
-        If use_decimal is true (not the default), ``decimal.Decimal`` will
-        be supported directly by the encoder. For the inverse, decode JSON
-        with ``parse_float=decimal.Decimal``.
-
-        """
-
-        self.skipkeys = skipkeys
-        self.ensure_ascii = ensure_ascii
-        self.check_circular = check_circular
-        self.allow_nan = allow_nan
-        self.sort_keys = sort_keys
-        self.use_decimal = use_decimal
-        if isinstance(indent, (int, long)):
-            indent = ' ' * indent
-        self.indent = indent
-        if separators is not None:
-            self.item_separator, self.key_separator = separators
-        if default is not None:
-            self.default = default
-        self.encoding = encoding
-
-    def default(self, o):
-        """Implement this method in a subclass such that it returns
-        a serializable object for ``o``, or calls the base implementation
-        (to raise a ``TypeError``).
-
-        For example, to support arbitrary iterators, you could
-        implement default like this::
-
-            def default(self, o):
-                try:
-                    iterable = iter(o)
-                except TypeError:
-                    pass
-                else:
-                    return list(iterable)
-                return JSONEncoder.default(self, o)
-
-        """
-        raise TypeError(repr(o) + " is not JSON serializable")
-
-    def encode(self, o):
-        """Return a JSON string representation of a Python data structure.
-
-        >>> from simplejson import JSONEncoder
-        >>> JSONEncoder().encode({"foo": ["bar", "baz"]})
-        '{"foo": ["bar", "baz"]}'
-
-        """
-        # This is for extremely simple cases and benchmarks.
-        if isinstance(o, basestring):
-            if isinstance(o, str):
-                _encoding = self.encoding
-                if (_encoding is not None
-                        and not (_encoding == 'utf-8')):
-                    o = o.decode(_encoding)
-            if self.ensure_ascii:
-                return encode_basestring_ascii(o)
-            else:
-                return encode_basestring(o)
-        # This doesn't pass the iterator directly to ''.join() because the
-        # exceptions aren't as detailed.  The list call should be roughly
-        # equivalent to the PySequence_Fast that ''.join() would do.
-        chunks = self.iterencode(o, _one_shot=True)
-        if not isinstance(chunks, (list, tuple)):
-            chunks = list(chunks)
-        if self.ensure_ascii:
-            return ''.join(chunks)
-        else:
-            return u''.join(chunks)
-
-    def iterencode(self, o, _one_shot=False):
-        """Encode the given object and yield each string
-        representation as available.
-
-        For example::
-
-            for chunk in JSONEncoder().iterencode(bigobject):
-                mysocket.write(chunk)
-
-        """
-        if self.check_circular:
-            markers = {}
-        else:
-            markers = None
-        if self.ensure_ascii:
-            _encoder = encode_basestring_ascii
-        else:
-            _encoder = encode_basestring
-        if self.encoding != 'utf-8':
-            def _encoder(o, _orig_encoder=_encoder, _encoding=self.encoding):
-                if isinstance(o, str):
-                    o = o.decode(_encoding)
-                return _orig_encoder(o)
-
-        def floatstr(o, allow_nan=self.allow_nan,
-                _repr=FLOAT_REPR, _inf=PosInf, _neginf=-PosInf):
-            # Check for specials. Note that this type of test is processor
-            # and/or platform-specific, so do tests which don't depend on
-            # the internals.
-
-            if o != o:
-                text = 'NaN'
-            elif o == _inf:
-                text = 'Infinity'
-            elif o == _neginf:
-                text = '-Infinity'
-            else:
-                return _repr(o)
-
-            if not allow_nan:
-                raise ValueError(
-                    "Out of range float values are not JSON compliant: " +
-                    repr(o))
-
-            return text
-
-
-        key_memo = {}
-        if (_one_shot and c_make_encoder is not None
-                and not self.indent and not self.sort_keys):
-            _iterencode = c_make_encoder(
-                markers, self.default, _encoder, self.indent,
-                self.key_separator, self.item_separator, self.sort_keys,
-                self.skipkeys, self.allow_nan, key_memo, self.use_decimal)
-        else:
-            _iterencode = _make_iterencode(
-                markers, self.default, _encoder, self.indent, floatstr,
-                self.key_separator, self.item_separator, self.sort_keys,
-                self.skipkeys, _one_shot, self.use_decimal)
-        try:
-            return _iterencode(o, 0)
-        finally:
-            key_memo.clear()
-
-
-class JSONEncoderForHTML(JSONEncoder):
-    """An encoder that produces JSON safe to embed in HTML.
-
-    To embed JSON content in, say, a script tag on a web page, the
-    characters &, < and > should be escaped. They cannot be escaped
-    with the usual entities (e.g. &amp;) because they are not expanded
-    within <script> tags.
-    """
-
-    def encode(self, o):
-        # Override JSONEncoder.encode because it has hacks for
-        # performance that make things more complicated.
-        chunks = self.iterencode(o, True)
-        if self.ensure_ascii:
-            return ''.join(chunks)
-        else:
-            return u''.join(chunks)
-
-    def iterencode(self, o, _one_shot=False):
-        chunks = super(JSONEncoderForHTML, self).iterencode(o, _one_shot)
-        for chunk in chunks:
-            chunk = chunk.replace('&', '\\u0026')
-            chunk = chunk.replace('<', '\\u003c')
-            chunk = chunk.replace('>', '\\u003e')
-            yield chunk
-
-
-def _make_iterencode(markers, _default, _encoder, _indent, _floatstr,
-        _key_separator, _item_separator, _sort_keys, _skipkeys, _one_shot,
-        _use_decimal,
-        ## HACK: hand-optimized bytecode; turn globals into locals
-        False=False,
-        True=True,
-        ValueError=ValueError,
-        basestring=basestring,
-        Decimal=Decimal,
-        dict=dict,
-        float=float,
-        id=id,
-        int=int,
-        isinstance=isinstance,
-        list=list,
-        long=long,
-        str=str,
-        tuple=tuple,
-    ):
-
-    def _iterencode_list(lst, _current_indent_level):
-        if not lst:
-            yield '[]'
-            return
-        if markers is not None:
-            markerid = id(lst)
-            if markerid in markers:
-                raise ValueError("Circular reference detected")
-            markers[markerid] = lst
-        buf = '['
-        if _indent is not None:
-            _current_indent_level += 1
-            newline_indent = '\n' + (_indent * _current_indent_level)
-            separator = _item_separator + newline_indent
-            buf += newline_indent
-        else:
-            newline_indent = None
-            separator = _item_separator
-        first = True
-        for value in lst:
-            if first:
-                first = False
-            else:
-                buf = separator
-            if isinstance(value, basestring):
-                yield buf + _encoder(value)
-            elif value is None:
-                yield buf + 'null'
-            elif value is True:
-                yield buf + 'true'
-            elif value is False:
-                yield buf + 'false'
-            elif isinstance(value, (int, long)):
-                yield buf + str(value)
-            elif isinstance(value, float):
-                yield buf + _floatstr(value)
-            elif _use_decimal and isinstance(value, Decimal):
-                yield buf + str(value)
-            else:
-                yield buf
-                if isinstance(value, (list, tuple)):
-                    chunks = _iterencode_list(value, _current_indent_level)
-                elif isinstance(value, dict):
-                    chunks = _iterencode_dict(value, _current_indent_level)
-                else:
-                    chunks = _iterencode(value, _current_indent_level)
-                for chunk in chunks:
-                    yield chunk
-        if newline_indent is not None:
-            _current_indent_level -= 1
-            yield '\n' + (_indent * _current_indent_level)
-        yield ']'
-        if markers is not None:
-            del markers[markerid]
-
-    def _iterencode_dict(dct, _current_indent_level):
-        if not dct:
-            yield '{}'
-            return
-        if markers is not None:
-            markerid = id(dct)
-            if markerid in markers:
-                raise ValueError("Circular reference detected")
-            markers[markerid] = dct
-        yield '{'
-        if _indent is not None:
-            _current_indent_level += 1
-            newline_indent = '\n' + (_indent * _current_indent_level)
-            item_separator = _item_separator + newline_indent
-            yield newline_indent
-        else:
-            newline_indent = None
-            item_separator = _item_separator
-        first = True
-        if _sort_keys:
-            items = dct.items()
-            items.sort(key=lambda kv: kv[0])
-        else:
-            items = dct.iteritems()
-        for key, value in items:
-            if isinstance(key, basestring):
-                pass
-            # JavaScript is weakly typed for these, so it makes sense to
-            # also allow them.  Many encoders seem to do something like this.
-            elif isinstance(key, float):
-                key = _floatstr(key)
-            elif key is True:
-                key = 'true'
-            elif key is False:
-                key = 'false'
-            elif key is None:
-                key = 'null'
-            elif isinstance(key, (int, long)):
-                key = str(key)
-            elif _skipkeys:
-                continue
-            else:
-                raise TypeError("key " + repr(key) + " is not a string")
-            if first:
-                first = False
-            else:
-                yield item_separator
-            yield _encoder(key)
-            yield _key_separator
-            if isinstance(value, basestring):
-                yield _encoder(value)
-            elif value is None:
-                yield 'null'
-            elif value is True:
-                yield 'true'
-            elif value is False:
-                yield 'false'
-            elif isinstance(value, (int, long)):
-                yield str(value)
-            elif isinstance(value, float):
-                yield _floatstr(value)
-            elif _use_decimal and isinstance(value, Decimal):
-                yield str(value)
-            else:
-                if isinstance(value, (list, tuple)):
-                    chunks = _iterencode_list(value, _current_indent_level)
-                elif isinstance(value, dict):
-                    chunks = _iterencode_dict(value, _current_indent_level)
-                else:
-                    chunks = _iterencode(value, _current_indent_level)
-                for chunk in chunks:
-                    yield chunk
-        if newline_indent is not None:
-            _current_indent_level -= 1
-            yield '\n' + (_indent * _current_indent_level)
-        yield '}'
-        if markers is not None:
-            del markers[markerid]
-
-    def _iterencode(o, _current_indent_level):
-        if isinstance(o, basestring):
-            yield _encoder(o)
-        elif o is None:
-            yield 'null'
-        elif o is True:
-            yield 'true'
-        elif o is False:
-            yield 'false'
-        elif isinstance(o, (int, long)):
-            yield str(o)
-        elif isinstance(o, float):
-            yield _floatstr(o)
-        elif isinstance(o, (list, tuple)):
-            for chunk in _iterencode_list(o, _current_indent_level):
-                yield chunk
-        elif isinstance(o, dict):
-            for chunk in _iterencode_dict(o, _current_indent_level):
-                yield chunk
-        elif _use_decimal and isinstance(o, Decimal):
-            yield str(o)
-        else:
-            if markers is not None:
-                markerid = id(o)
-                if markerid in markers:
-                    raise ValueError("Circular reference detected")
-                markers[markerid] = o
-            o = _default(o)
-            for chunk in _iterencode(o, _current_indent_level):
-                yield chunk
-            if markers is not None:
-                del markers[markerid]
-
-    return _iterencode
diff --git a/tablib/packages/simplejson/ordered_dict.py b/tablib/packages/simplejson/ordered_dict.py
deleted file mode 100644
index 87ad888..0000000
--- a/tablib/packages/simplejson/ordered_dict.py
+++ /dev/null
@@ -1,119 +0,0 @@
-"""Drop-in replacement for collections.OrderedDict by Raymond Hettinger
-
-http://code.activestate.com/recipes/576693/
-
-"""
-from UserDict import DictMixin
-
-# Modified from original to support Python 2.4, see
-# http://code.google.com/p/simplejson/issues/detail?id=53
-try:
-    all
-except NameError:
-    def all(seq):
-        for elem in seq:
-            if not elem:
-                return False
-        return True
-
-class OrderedDict(dict, DictMixin):
-
-    def __init__(self, *args, **kwds):
-        if len(args) > 1:
-            raise TypeError('expected at most 1 arguments, got %d' % len(args))
-        try:
-            self.__end
-        except AttributeError:
-            self.clear()
-        self.update(*args, **kwds)
-
-    def clear(self):
-        self.__end = end = []
-        end += [None, end, end]         # sentinel node for doubly linked list
-        self.__map = {}                 # key --> [key, prev, next]
-        dict.clear(self)
-
-    def __setitem__(self, key, value):
-        if key not in self:
-            end = self.__end
-            curr = end[1]
-            curr[2] = end[1] = self.__map[key] = [key, curr, end]
-        dict.__setitem__(self, key, value)
-
-    def __delitem__(self, key):
-        dict.__delitem__(self, key)
-        key, prev, next = self.__map.pop(key)
-        prev[2] = next
-        next[1] = prev
-
-    def __iter__(self):
-        end = self.__end
-        curr = end[2]
-        while curr is not end:
-            yield curr[0]
-            curr = curr[2]
-
-    def __reversed__(self):
-        end = self.__end
-        curr = end[1]
-        while curr is not end:
-            yield curr[0]
-            curr = curr[1]
-
-    def popitem(self, last=True):
-        if not self:
-            raise KeyError('dictionary is empty')
-        # Modified from original to support Python 2.4, see
-        # http://code.google.com/p/simplejson/issues/detail?id=53
-        if last:
-            key = reversed(self).next()
-        else:
-            key = iter(self).next()
-        value = self.pop(key)
-        return key, value
-
-    def __reduce__(self):
-        items = [[k, self[k]] for k in self]
-        tmp = self.__map, self.__end
-        del self.__map, self.__end
-        inst_dict = vars(self).copy()
-        self.__map, self.__end = tmp
-        if inst_dict:
-            return (self.__class__, (items,), inst_dict)
-        return self.__class__, (items,)
-
-    def keys(self):
-        return list(self)
-
-    setdefault = DictMixin.setdefault
-    update = DictMixin.update
-    pop = DictMixin.pop
-    values = DictMixin.values
-    items = DictMixin.items
-    iterkeys = DictMixin.iterkeys
-    itervalues = DictMixin.itervalues
-    iteritems = DictMixin.iteritems
-
-    def __repr__(self):
-        if not self:
-            return '%s()' % (self.__class__.__name__,)
-        return '%s(%r)' % (self.__class__.__name__, self.items())
-
-    def copy(self):
-        return self.__class__(self)
-
-    @classmethod
-    def fromkeys(cls, iterable, value=None):
-        d = cls()
-        for key in iterable:
-            d[key] = value
-        return d
-
-    def __eq__(self, other):
-        if isinstance(other, OrderedDict):
-            return len(self)==len(other) and \
-                   all(p==q for p, q in  zip(self.items(), other.items()))
-        return dict.__eq__(self, other)
-
-    def __ne__(self, other):
-        return not self == other
diff --git a/tablib/packages/simplejson/scanner.py b/tablib/packages/simplejson/scanner.py
deleted file mode 100644
index 54593a3..0000000
--- a/tablib/packages/simplejson/scanner.py
+++ /dev/null
@@ -1,77 +0,0 @@
-"""JSON token scanner
-"""
-import re
-def _import_c_make_scanner():
-    try:
-        from simplejson._speedups import make_scanner
-        return make_scanner
-    except ImportError:
-        return None
-c_make_scanner = _import_c_make_scanner()
-
-__all__ = ['make_scanner']
-
-NUMBER_RE = re.compile(
-    r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
-    (re.VERBOSE | re.MULTILINE | re.DOTALL))
-
-def py_make_scanner(context):
-    parse_object = context.parse_object
-    parse_array = context.parse_array
-    parse_string = context.parse_string
-    match_number = NUMBER_RE.match
-    encoding = context.encoding
-    strict = context.strict
-    parse_float = context.parse_float
-    parse_int = context.parse_int
-    parse_constant = context.parse_constant
-    object_hook = context.object_hook
-    object_pairs_hook = context.object_pairs_hook
-    memo = context.memo
-
-    def _scan_once(string, idx):
-        try:
-            nextchar = string[idx]
-        except IndexError:
-            raise StopIteration
-
-        if nextchar == '"':
-            return parse_string(string, idx + 1, encoding, strict)
-        elif nextchar == '{':
-            return parse_object((string, idx + 1), encoding, strict,
-                _scan_once, object_hook, object_pairs_hook, memo)
-        elif nextchar == '[':
-            return parse_array((string, idx + 1), _scan_once)
-        elif nextchar == 'n' and string[idx:idx + 4] == 'null':
-            return None, idx + 4
-        elif nextchar == 't' and string[idx:idx + 4] == 'true':
-            return True, idx + 4
-        elif nextchar == 'f' and string[idx:idx + 5] == 'false':
-            return False, idx + 5
-
-        m = match_number(string, idx)
-        if m is not None:
-            integer, frac, exp = m.groups()
-            if frac or exp:
-                res = parse_float(integer + (frac or '') + (exp or ''))
-            else:
-                res = parse_int(integer)
-            return res, m.end()
-        elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
-            return parse_constant('NaN'), idx + 3
-        elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
-            return parse_constant('Infinity'), idx + 8
-        elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
-            return parse_constant('-Infinity'), idx + 9
-        else:
-            raise StopIteration
-
-    def scan_once(string, idx):
-        try:
-            return _scan_once(string, idx)
-        finally:
-            memo.clear()
-
-    return scan_once
-
-make_scanner = c_make_scanner or py_make_scanner
diff --git a/tablib/packages/simplejson/tests/__init__.py b/tablib/packages/simplejson/tests/__init__.py
deleted file mode 100644
index 22d8465..0000000
--- a/tablib/packages/simplejson/tests/__init__.py
+++ /dev/null
@@ -1,63 +0,0 @@
-import unittest
-import doctest
-
-
-class OptionalExtensionTestSuite(unittest.TestSuite):
-    def run(self, result):
-        import simplejson
-        run = unittest.TestSuite.run
-        run(self, result)
-        simplejson._toggle_speedups(False)
-        run(self, result)
-        simplejson._toggle_speedups(True)
-        return result
-
-
-def additional_tests(suite=None):
-    import simplejson
-    import simplejson.encoder
-    import simplejson.decoder
-    if suite is None:
-        suite = unittest.TestSuite()
-    for mod in (simplejson, simplejson.encoder, simplejson.decoder):
-        suite.addTest(doctest.DocTestSuite(mod))
-    suite.addTest(doctest.DocFileSuite('../../index.rst'))
-    return suite
-
-
-def all_tests_suite():
-    suite = unittest.TestLoader().loadTestsFromNames([
-        'simplejson.tests.test_check_circular',
-        'simplejson.tests.test_decode',
-        'simplejson.tests.test_default',
-        'simplejson.tests.test_dump',
-        'simplejson.tests.test_encode_basestring_ascii',
-        'simplejson.tests.test_encode_for_html',
-        'simplejson.tests.test_fail',
-        'simplejson.tests.test_float',
-        'simplejson.tests.test_indent',
-        'simplejson.tests.test_pass1',
-        'simplejson.tests.test_pass2',
-        'simplejson.tests.test_pass3',
-        'simplejson.tests.test_recursion',
-        'simplejson.tests.test_scanstring',
-        'simplejson.tests.test_separators',
-        'simplejson.tests.test_speedups',
-        'simplejson.tests.test_unicode',
-        'simplejson.tests.test_decimal',
-    ])
-    suite = additional_tests(suite)
-    return OptionalExtensionTestSuite([suite])
-
-
-def main():
-    runner = unittest.TextTestRunner()
-    suite = all_tests_suite()
-    runner.run(suite)
-
-
-if __name__ == '__main__':
-    import os
-    import sys
-    sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
-    main()
diff --git a/tablib/packages/simplejson/tests/test_check_circular.py b/tablib/packages/simplejson/tests/test_check_circular.py
deleted file mode 100644
index af6463d..0000000
--- a/tablib/packages/simplejson/tests/test_check_circular.py
+++ /dev/null
@@ -1,30 +0,0 @@
-from unittest import TestCase
-import simplejson as json
-
-def default_iterable(obj):
-    return list(obj)
-
-class TestCheckCircular(TestCase):
-    def test_circular_dict(self):
-        dct = {}
-        dct['a'] = dct
-        self.assertRaises(ValueError, json.dumps, dct)
-
-    def test_circular_list(self):
-        lst = []
-        lst.append(lst)
-        self.assertRaises(ValueError, json.dumps, lst)
-
-    def test_circular_composite(self):
-        dct2 = {}
-        dct2['a'] = []
-        dct2['a'].append(dct2)
-        self.assertRaises(ValueError, json.dumps, dct2)
-
-    def test_circular_default(self):
-        json.dumps([set()], default=default_iterable)
-        self.assertRaises(TypeError, json.dumps, [set()])
-
-    def test_circular_off_default(self):
-        json.dumps([set()], default=default_iterable, check_circular=False)
-        self.assertRaises(TypeError, json.dumps, [set()], check_circular=False)
diff --git a/tablib/packages/simplejson/tests/test_decimal.py b/tablib/packages/simplejson/tests/test_decimal.py
deleted file mode 100644
index a694c7e..0000000
--- a/tablib/packages/simplejson/tests/test_decimal.py
+++ /dev/null
@@ -1,33 +0,0 @@
-from decimal import Decimal
-from unittest import TestCase
-
-import simplejson as json
-
-class TestDecimal(TestCase):
-    NUMS = "1.0", "10.00", "1.1", "1234567890.1234567890", "500"
-    def test_decimal_encode(self):
-        for d in map(Decimal, self.NUMS):
-            self.assertEquals(json.dumps(d, use_decimal=True), str(d))
-    
-    def test_decimal_decode(self):
-        for s in self.NUMS:
-            self.assertEquals(json.loads(s, parse_float=Decimal), Decimal(s))
-    
-    def test_decimal_roundtrip(self):
-        for d in map(Decimal, self.NUMS):
-            # The type might not be the same (int and Decimal) but they
-            # should still compare equal.
-            self.assertEquals(
-                json.loads(
-                    json.dumps(d, use_decimal=True), parse_float=Decimal),
-                d)
-            self.assertEquals(
-                json.loads(
-                    json.dumps([d], use_decimal=True), parse_float=Decimal),
-                [d])
-
-    def test_decimal_defaults(self):
-        d = Decimal(1)
-        # use_decimal=False is the default
-        self.assertRaises(TypeError, json.dumps, d, use_decimal=False)
-        self.assertRaises(TypeError, json.dumps, d)
\ No newline at end of file
diff --git a/tablib/packages/simplejson/tests/test_decode.py b/tablib/packages/simplejson/tests/test_decode.py
deleted file mode 100644
index a5a1c48..0000000
--- a/tablib/packages/simplejson/tests/test_decode.py
+++ /dev/null
@@ -1,73 +0,0 @@
-import decimal
-from unittest import TestCase
-from StringIO import StringIO
-
-import simplejson as json
-from simplejson import OrderedDict
-
-class TestDecode(TestCase):
-    if not hasattr(TestCase, 'assertIs'):
-        def assertIs(self, a, b):
-            self.assertTrue(a is b, '%r is %r' % (a, b))
-
-    def test_decimal(self):
-        rval = json.loads('1.1', parse_float=decimal.Decimal)
-        self.assertTrue(isinstance(rval, decimal.Decimal))
-        self.assertEquals(rval, decimal.Decimal('1.1'))
-
-    def test_float(self):
-        rval = json.loads('1', parse_int=float)
-        self.assertTrue(isinstance(rval, float))
-        self.assertEquals(rval, 1.0)
-
-    def test_decoder_optimizations(self):
-        # Several optimizations were made that skip over calls to
-        # the whitespace regex, so this test is designed to try and
-        # exercise the uncommon cases. The array cases are already covered.
-        rval = json.loads('{   "key"    :    "value"    ,  "k":"v"    }')
-        self.assertEquals(rval, {"key":"value", "k":"v"})
-
-    def test_empty_objects(self):
-        s = '{}'
-        self.assertEqual(json.loads(s), eval(s))
-        s = '[]'
-        self.assertEqual(json.loads(s), eval(s))
-        s = '""'
-        self.assertEqual(json.loads(s), eval(s))
-
-    def test_object_pairs_hook(self):
-        s = '{"xkd":1, "kcw":2, "art":3, "hxm":4, "qrt":5, "pad":6, "hoy":7}'
-        p = [("xkd", 1), ("kcw", 2), ("art", 3), ("hxm", 4),
-             ("qrt", 5), ("pad", 6), ("hoy", 7)]
-        self.assertEqual(json.loads(s), eval(s))
-        self.assertEqual(json.loads(s, object_pairs_hook=lambda x: x), p)
-        self.assertEqual(json.load(StringIO(s),
-                                   object_pairs_hook=lambda x: x), p)
-        od = json.loads(s, object_pairs_hook=OrderedDict)
-        self.assertEqual(od, OrderedDict(p))
-        self.assertEqual(type(od), OrderedDict)
-        # the object_pairs_hook takes priority over the object_hook
-        self.assertEqual(json.loads(s,
-                                    object_pairs_hook=OrderedDict,
-                                    object_hook=lambda x: None),
-                         OrderedDict(p))
-
-    def check_keys_reuse(self, source, loads):
-        rval = loads(source)
-        (a, b), (c, d) = sorted(rval[0]), sorted(rval[1])
-        self.assertIs(a, c)
-        self.assertIs(b, d)
-
-    def test_keys_reuse_str(self):
-        s = u'[{"a_key": 1, "b_\xe9": 2}, {"a_key": 3, "b_\xe9": 4}]'.encode('utf8')
-        self.check_keys_reuse(s, json.loads)
-
-    def test_keys_reuse_unicode(self):
-        s = u'[{"a_key": 1, "b_\xe9": 2}, {"a_key": 3, "b_\xe9": 4}]'
-        self.check_keys_reuse(s, json.loads)
-
-    def test_empty_strings(self):
-        self.assertEqual(json.loads('""'), "")
-        self.assertEqual(json.loads(u'""'), u"")
-        self.assertEqual(json.loads('[""]'), [""])
-        self.assertEqual(json.loads(u'[""]'), [u""])
diff --git a/tablib/packages/simplejson/tests/test_default.py b/tablib/packages/simplejson/tests/test_default.py
deleted file mode 100644
index 139e42b..0000000
--- a/tablib/packages/simplejson/tests/test_default.py
+++ /dev/null
@@ -1,9 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-
-class TestDefault(TestCase):
-    def test_default(self):
-        self.assertEquals(
-            json.dumps(type, default=repr),
-            json.dumps(repr(type)))
diff --git a/tablib/packages/simplejson/tests/test_dump.py b/tablib/packages/simplejson/tests/test_dump.py
deleted file mode 100644
index 8b34004..0000000
--- a/tablib/packages/simplejson/tests/test_dump.py
+++ /dev/null
@@ -1,27 +0,0 @@
-from unittest import TestCase
-from cStringIO import StringIO
-
-import simplejson as json
-
-class TestDump(TestCase):
-    def test_dump(self):
-        sio = StringIO()
-        json.dump({}, sio)
-        self.assertEquals(sio.getvalue(), '{}')
-
-    def test_dumps(self):
-        self.assertEquals(json.dumps({}), '{}')
-
-    def test_encode_truefalse(self):
-        self.assertEquals(json.dumps(
-                 {True: False, False: True}, sort_keys=True),
-                 '{"false": true, "true": false}')
-        self.assertEquals(json.dumps(
-                {2: 3.0, 4.0: 5L, False: 1, 6L: True, "7": 0}, sort_keys=True),
-                '{"false": 1, "2": 3.0, "4.0": 5, "6": true, "7": 0}')
-
-    def test_ordered_dict(self):
-        # http://bugs.python.org/issue6105
-        items = [('one', 1), ('two', 2), ('three', 3), ('four', 4), ('five', 5)]
-        s = json.dumps(json.OrderedDict(items))
-        self.assertEqual(s, '{"one": 1, "two": 2, "three": 3, "four": 4, "five": 5}')
\ No newline at end of file
diff --git a/tablib/packages/simplejson/tests/test_encode_basestring_ascii.py b/tablib/packages/simplejson/tests/test_encode_basestring_ascii.py
deleted file mode 100644
index b19631a..0000000
--- a/tablib/packages/simplejson/tests/test_encode_basestring_ascii.py
+++ /dev/null
@@ -1,41 +0,0 @@
-from unittest import TestCase
-
-import simplejson.encoder
-
-CASES = [
-    (u'/\\"\ucafe\ubabe\uab98\ufcde\ubcda\uef4a\x08\x0c\n\r\t`1~!@#$%^&*()_+-=[]{}|;:\',./<>?', '"/\\\\\\"\\ucafe\\ubabe\\uab98\\ufcde\\ubcda\\uef4a\\b\\f\\n\\r\\t`1~!@#$%^&*()_+-=[]{}|;:\',./<>?"'),
-    (u'\u0123\u4567\u89ab\ucdef\uabcd\uef4a', '"\\u0123\\u4567\\u89ab\\ucdef\\uabcd\\uef4a"'),
-    (u'controls', '"controls"'),
-    (u'\x08\x0c\n\r\t', '"\\b\\f\\n\\r\\t"'),
-    (u'{"object with 1 member":["array with 1 element"]}', '"{\\"object with 1 member\\":[\\"array with 1 element\\"]}"'),
-    (u' s p a c e d ', '" s p a c e d "'),
-    (u'\U0001d120', '"\\ud834\\udd20"'),
-    (u'\u03b1\u03a9', '"\\u03b1\\u03a9"'),
-    ('\xce\xb1\xce\xa9', '"\\u03b1\\u03a9"'),
-    (u'\u03b1\u03a9', '"\\u03b1\\u03a9"'),
-    ('\xce\xb1\xce\xa9', '"\\u03b1\\u03a9"'),
-    (u'\u03b1\u03a9', '"\\u03b1\\u03a9"'),
-    (u'\u03b1\u03a9', '"\\u03b1\\u03a9"'),
-    (u"`1~!@#$%^&*()_+-={':[,]}|;.</>?", '"`1~!@#$%^&*()_+-={\':[,]}|;.</>?"'),
-    (u'\x08\x0c\n\r\t', '"\\b\\f\\n\\r\\t"'),
-    (u'\u0123\u4567\u89ab\ucdef\uabcd\uef4a', '"\\u0123\\u4567\\u89ab\\ucdef\\uabcd\\uef4a"'),
-]
-
-class TestEncodeBaseStringAscii(TestCase):
-    def test_py_encode_basestring_ascii(self):
-        self._test_encode_basestring_ascii(simplejson.encoder.py_encode_basestring_ascii)
-
-    def test_c_encode_basestring_ascii(self):
-        if not simplejson.encoder.c_encode_basestring_ascii:
-            return
-        self._test_encode_basestring_ascii(simplejson.encoder.c_encode_basestring_ascii)
-
-    def _test_encode_basestring_ascii(self, encode_basestring_ascii):
-        fname = encode_basestring_ascii.__name__
-        for input_string, expect in CASES:
-            result = encode_basestring_ascii(input_string)
-            #self.assertEquals(result, expect,
-            #    '{0!r} != {1!r} for {2}({3!r})'.format(
-            #        result, expect, fname, input_string))
-            self.assertEquals(result, expect,
-                '%r != %r for %s(%r)' % (result, expect, fname, input_string))
diff --git a/tablib/packages/simplejson/tests/test_encode_for_html.py b/tablib/packages/simplejson/tests/test_encode_for_html.py
deleted file mode 100644
index c2d5f80..0000000
--- a/tablib/packages/simplejson/tests/test_encode_for_html.py
+++ /dev/null
@@ -1,32 +0,0 @@
-import unittest
-
-import simplejson.decoder
-import simplejson.encoder
-
-
-class TestEncodeForHTML(unittest.TestCase):
-
-    def setUp(self):
-        self.decoder = simplejson.decoder.JSONDecoder()
-        self.encoder = simplejson.encoder.JSONEncoderForHTML()
-
-    def test_basic_encode(self):
-        self.assertEqual(r'"\u0026"', self.encoder.encode('&'))
-        self.assertEqual(r'"\u003c"', self.encoder.encode('<'))
-        self.assertEqual(r'"\u003e"', self.encoder.encode('>'))
-
-    def test_basic_roundtrip(self):
-        for char in '&<>':
-            self.assertEqual(
-                char, self.decoder.decode(
-                    self.encoder.encode(char)))
-
-    def test_prevent_script_breakout(self):
-        bad_string = '</script><script>alert("gotcha")</script>'
-        self.assertEqual(
-            r'"\u003c/script\u003e\u003cscript\u003e'
-            r'alert(\"gotcha\")\u003c/script\u003e"',
-            self.encoder.encode(bad_string))
-        self.assertEqual(
-            bad_string, self.decoder.decode(
-                self.encoder.encode(bad_string)))
diff --git a/tablib/packages/simplejson/tests/test_fail.py b/tablib/packages/simplejson/tests/test_fail.py
deleted file mode 100644
index 646c0f4..0000000
--- a/tablib/packages/simplejson/tests/test_fail.py
+++ /dev/null
@@ -1,91 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-
-# Fri Dec 30 18:57:26 2005
-JSONDOCS = [
-    # http://json.org/JSON_checker/test/fail1.json
-    '"A JSON payload should be an object or array, not a string."',
-    # http://json.org/JSON_checker/test/fail2.json
-    '["Unclosed array"',
-    # http://json.org/JSON_checker/test/fail3.json
-    '{unquoted_key: "keys must be quoted}',
-    # http://json.org/JSON_checker/test/fail4.json
-    '["extra comma",]',
-    # http://json.org/JSON_checker/test/fail5.json
-    '["double extra comma",,]',
-    # http://json.org/JSON_checker/test/fail6.json
-    '[   , "<-- missing value"]',
-    # http://json.org/JSON_checker/test/fail7.json
-    '["Comma after the close"],',
-    # http://json.org/JSON_checker/test/fail8.json
-    '["Extra close"]]',
-    # http://json.org/JSON_checker/test/fail9.json
-    '{"Extra comma": true,}',
-    # http://json.org/JSON_checker/test/fail10.json
-    '{"Extra value after close": true} "misplaced quoted value"',
-    # http://json.org/JSON_checker/test/fail11.json
-    '{"Illegal expression": 1 + 2}',
-    # http://json.org/JSON_checker/test/fail12.json
-    '{"Illegal invocation": alert()}',
-    # http://json.org/JSON_checker/test/fail13.json
-    '{"Numbers cannot have leading zeroes": 013}',
-    # http://json.org/JSON_checker/test/fail14.json
-    '{"Numbers cannot be hex": 0x14}',
-    # http://json.org/JSON_checker/test/fail15.json
-    '["Illegal backslash escape: \\x15"]',
-    # http://json.org/JSON_checker/test/fail16.json
-    '["Illegal backslash escape: \\\'"]',
-    # http://json.org/JSON_checker/test/fail17.json
-    '["Illegal backslash escape: \\017"]',
-    # http://json.org/JSON_checker/test/fail18.json
-    '[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]',
-    # http://json.org/JSON_checker/test/fail19.json
-    '{"Missing colon" null}',
-    # http://json.org/JSON_checker/test/fail20.json
-    '{"Double colon":: null}',
-    # http://json.org/JSON_checker/test/fail21.json
-    '{"Comma instead of colon", null}',
-    # http://json.org/JSON_checker/test/fail22.json
-    '["Colon instead of comma": false]',
-    # http://json.org/JSON_checker/test/fail23.json
-    '["Bad value", truth]',
-    # http://json.org/JSON_checker/test/fail24.json
-    "['single quote']",
-    # http://code.google.com/p/simplejson/issues/detail?id=3
-    u'["A\u001FZ control characters in string"]',
-]
-
-SKIPS = {
-    1: "why not have a string payload?",
-    18: "spec doesn't specify any nesting limitations",
-}
-
-class TestFail(TestCase):
-    def test_failures(self):
-        for idx, doc in enumerate(JSONDOCS):
-            idx = idx + 1
-            if idx in SKIPS:
-                json.loads(doc)
-                continue
-            try:
-                json.loads(doc)
-            except json.JSONDecodeError:
-                pass
-            else:
-                #self.fail("Expected failure for fail{0}.json: {1!r}".format(idx, doc))
-                self.fail("Expected failure for fail%d.json: %r" % (idx, doc))
-
-    def test_array_decoder_issue46(self):
-        # http://code.google.com/p/simplejson/issues/detail?id=46
-        for doc in [u'[,]', '[,]']:
-            try:
-                json.loads(doc)
-            except json.JSONDecodeError, e:
-                self.assertEquals(e.pos, 1)
-                self.assertEquals(e.lineno, 1)
-                self.assertEquals(e.colno, 1)
-            except Exception, e:
-                self.fail("Unexpected exception raised %r %s" % (e, e))
-            else:
-                self.fail("Unexpected success parsing '[,]'")
\ No newline at end of file
diff --git a/tablib/packages/simplejson/tests/test_float.py b/tablib/packages/simplejson/tests/test_float.py
deleted file mode 100644
index 94502c6..0000000
--- a/tablib/packages/simplejson/tests/test_float.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import math
-from unittest import TestCase
-
-import simplejson as json
-
-class TestFloat(TestCase):
-    def test_floats(self):
-        for num in [1617161771.7650001, math.pi, math.pi**100,
-                    math.pi**-100, 3.1]:
-            self.assertEquals(float(json.dumps(num)), num)
-            self.assertEquals(json.loads(json.dumps(num)), num)
-            self.assertEquals(json.loads(unicode(json.dumps(num))), num)
-
-    def test_ints(self):
-        for num in [1, 1L, 1<<32, 1<<64]:
-            self.assertEquals(json.dumps(num), str(num))
-            self.assertEquals(int(json.dumps(num)), num)
-            self.assertEquals(json.loads(json.dumps(num)), num)
-            self.assertEquals(json.loads(unicode(json.dumps(num))), num)
diff --git a/tablib/packages/simplejson/tests/test_indent.py b/tablib/packages/simplejson/tests/test_indent.py
deleted file mode 100644
index 985831b..0000000
--- a/tablib/packages/simplejson/tests/test_indent.py
+++ /dev/null
@@ -1,53 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-import textwrap
-
-class TestIndent(TestCase):
-    def test_indent(self):
-        h = [['blorpie'], ['whoops'], [], 'd-shtaeou', 'd-nthiouh',
-             'i-vhbjkhnth',
-             {'nifty': 87}, {'field': 'yes', 'morefield': False} ]
-
-        expect = textwrap.dedent("""\
-        [
-        \t[
-        \t\t"blorpie"
-        \t],
-        \t[
-        \t\t"whoops"
-        \t],
-        \t[],
-        \t"d-shtaeou",
-        \t"d-nthiouh",
-        \t"i-vhbjkhnth",
-        \t{
-        \t\t"nifty": 87
-        \t},
-        \t{
-        \t\t"field": "yes",
-        \t\t"morefield": false
-        \t}
-        ]""")
-
-
-        d1 = json.dumps(h)
-        d2 = json.dumps(h, indent='\t', sort_keys=True, separators=(',', ': '))
-        d3 = json.dumps(h, indent='  ', sort_keys=True, separators=(',', ': '))
-        d4 = json.dumps(h, indent=2, sort_keys=True, separators=(',', ': '))
-
-        h1 = json.loads(d1)
-        h2 = json.loads(d2)
-        h3 = json.loads(d3)
-        h4 = json.loads(d4)
-
-        self.assertEquals(h1, h)
-        self.assertEquals(h2, h)
-        self.assertEquals(h3, h)
-        self.assertEquals(h4, h)
-        self.assertEquals(d3, expect.replace('\t', '  '))
-        self.assertEquals(d4, expect.replace('\t', '  '))
-        # NOTE: Python 2.4 textwrap.dedent converts tabs to spaces,
-        #       so the following is expected to fail. Python 2.4 is not a
-        #       supported platform in simplejson 2.1.0+.
-        self.assertEquals(d2, expect)
diff --git a/tablib/packages/simplejson/tests/test_pass1.py b/tablib/packages/simplejson/tests/test_pass1.py
deleted file mode 100644
index c3d6302..0000000
--- a/tablib/packages/simplejson/tests/test_pass1.py
+++ /dev/null
@@ -1,76 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-
-# from http://json.org/JSON_checker/test/pass1.json
-JSON = r'''
-[
-    "JSON Test Pattern pass1",
-    {"object with 1 member":["array with 1 element"]},
-    {},
-    [],
-    -42,
-    true,
-    false,
-    null,
-    {
-        "integer": 1234567890,
-        "real": -9876.543210,
-        "e": 0.123456789e-12,
-        "E": 1.234567890E+34,
-        "":  23456789012E666,
-        "zero": 0,
-        "one": 1,
-        "space": " ",
-        "quote": "\"",
-        "backslash": "\\",
-        "controls": "\b\f\n\r\t",
-        "slash": "/ & \/",
-        "alpha": "abcdefghijklmnopqrstuvwyz",
-        "ALPHA": "ABCDEFGHIJKLMNOPQRSTUVWYZ",
-        "digit": "0123456789",
-        "special": "`1~!@#$%^&*()_+-={':[,]}|;.</>?",
-        "hex": "\u0123\u4567\u89AB\uCDEF\uabcd\uef4A",
-        "true": true,
-        "false": false,
-        "null": null,
-        "array":[  ],
-        "object":{  },
-        "address": "50 St. James Street",
-        "url": "http://www.JSON.org/",
-        "comment": "// /* <!-- --",
-        "# -- --> */": " ",
-        " s p a c e d " :[1,2 , 3
-
-,
-
-4 , 5        ,          6           ,7        ],
-        "compact": [1,2,3,4,5,6,7],
-        "jsontext": "{\"object with 1 member\":[\"array with 1 element\"]}",
-        "quotes": "&#34; \u0022 %22 0x22 034 &#x22;",
-        "\/\\\"\uCAFE\uBABE\uAB98\uFCDE\ubcda\uef4A\b\f\n\r\t`1~!@#$%^&*()_+-=[]{}|;:',./<>?"
-: "A key can be any string"
-    },
-    0.5 ,98.6
-,
-99.44
-,
-
-1066
-
-
-,"rosebud"]
-'''
-
-class TestPass1(TestCase):
-    def test_parse(self):
-        # test in/out equivalence and parsing
-        res = json.loads(JSON)
-        out = json.dumps(res)
-        self.assertEquals(res, json.loads(out))
-        try:
-            json.dumps(res, allow_nan=False)
-        except ValueError:
-            pass
-        else:
-            self.fail("23456789012E666 should be out of range")
diff --git a/tablib/packages/simplejson/tests/test_pass2.py b/tablib/packages/simplejson/tests/test_pass2.py
deleted file mode 100644
index de4ee00..0000000
--- a/tablib/packages/simplejson/tests/test_pass2.py
+++ /dev/null
@@ -1,14 +0,0 @@
-from unittest import TestCase
-import simplejson as json
-
-# from http://json.org/JSON_checker/test/pass2.json
-JSON = r'''
-[[[[[[[[[[[[[[[[[[["Not too deep"]]]]]]]]]]]]]]]]]]]
-'''
-
-class TestPass2(TestCase):
-    def test_parse(self):
-        # test in/out equivalence and parsing
-        res = json.loads(JSON)
-        out = json.dumps(res)
-        self.assertEquals(res, json.loads(out))
diff --git a/tablib/packages/simplejson/tests/test_pass3.py b/tablib/packages/simplejson/tests/test_pass3.py
deleted file mode 100644
index f591aba..0000000
--- a/tablib/packages/simplejson/tests/test_pass3.py
+++ /dev/null
@@ -1,20 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-
-# from http://json.org/JSON_checker/test/pass3.json
-JSON = r'''
-{
-    "JSON Test Pattern pass3": {
-        "The outermost value": "must be an object or array.",
-        "In this test": "It is an object."
-    }
-}
-'''
-
-class TestPass3(TestCase):
-    def test_parse(self):
-        # test in/out equivalence and parsing
-        res = json.loads(JSON)
-        out = json.dumps(res)
-        self.assertEquals(res, json.loads(out))
diff --git a/tablib/packages/simplejson/tests/test_recursion.py b/tablib/packages/simplejson/tests/test_recursion.py
deleted file mode 100644
index 97422a6..0000000
--- a/tablib/packages/simplejson/tests/test_recursion.py
+++ /dev/null
@@ -1,67 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-
-class JSONTestObject:
-    pass
-
-
-class RecursiveJSONEncoder(json.JSONEncoder):
-    recurse = False
-    def default(self, o):
-        if o is JSONTestObject:
-            if self.recurse:
-                return [JSONTestObject]
-            else:
-                return 'JSONTestObject'
-        return json.JSONEncoder.default(o)
-
-
-class TestRecursion(TestCase):
-    def test_listrecursion(self):
-        x = []
-        x.append(x)
-        try:
-            json.dumps(x)
-        except ValueError:
-            pass
-        else:
-            self.fail("didn't raise ValueError on list recursion")
-        x = []
-        y = [x]
-        x.append(y)
-        try:
-            json.dumps(x)
-        except ValueError:
-            pass
-        else:
-            self.fail("didn't raise ValueError on alternating list recursion")
-        y = []
-        x = [y, y]
-        # ensure that the marker is cleared
-        json.dumps(x)
-
-    def test_dictrecursion(self):
-        x = {}
-        x["test"] = x
-        try:
-            json.dumps(x)
-        except ValueError:
-            pass
-        else:
-            self.fail("didn't raise ValueError on dict recursion")
-        x = {}
-        y = {"a": x, "b": x}
-        # ensure that the marker is cleared
-        json.dumps(x)
-
-    def test_defaultrecursion(self):
-        enc = RecursiveJSONEncoder()
-        self.assertEquals(enc.encode(JSONTestObject), '"JSONTestObject"')
-        enc.recurse = True
-        try:
-            enc.encode(JSONTestObject)
-        except ValueError:
-            pass
-        else:
-            self.fail("didn't raise ValueError on default recursion")
diff --git a/tablib/packages/simplejson/tests/test_scanstring.py b/tablib/packages/simplejson/tests/test_scanstring.py
deleted file mode 100644
index a7fcd46..0000000
--- a/tablib/packages/simplejson/tests/test_scanstring.py
+++ /dev/null
@@ -1,117 +0,0 @@
-import sys
-from unittest import TestCase
-
-import simplejson as json
-import simplejson.decoder
-
-class TestScanString(TestCase):
-    def test_py_scanstring(self):
-        self._test_scanstring(simplejson.decoder.py_scanstring)
-
-    def test_c_scanstring(self):
-        if not simplejson.decoder.c_scanstring:
-            return
-        self._test_scanstring(simplejson.decoder.c_scanstring)
-
-    def _test_scanstring(self, scanstring):
-        self.assertEquals(
-            scanstring('"z\\ud834\\udd20x"', 1, None, True),
-            (u'z\U0001d120x', 16))
-
-        if sys.maxunicode == 65535:
-            self.assertEquals(
-                scanstring(u'"z\U0001d120x"', 1, None, True),
-                (u'z\U0001d120x', 6))
-        else:
-            self.assertEquals(
-                scanstring(u'"z\U0001d120x"', 1, None, True),
-                (u'z\U0001d120x', 5))
-
-        self.assertEquals(
-            scanstring('"\\u007b"', 1, None, True),
-            (u'{', 8))
-
-        self.assertEquals(
-            scanstring('"A JSON payload should be an object or array, not a string."', 1, None, True),
-            (u'A JSON payload should be an object or array, not a string.', 60))
-
-        self.assertEquals(
-            scanstring('["Unclosed array"', 2, None, True),
-            (u'Unclosed array', 17))
-
-        self.assertEquals(
-            scanstring('["extra comma",]', 2, None, True),
-            (u'extra comma', 14))
-
-        self.assertEquals(
-            scanstring('["double extra comma",,]', 2, None, True),
-            (u'double extra comma', 21))
-
-        self.assertEquals(
-            scanstring('["Comma after the close"],', 2, None, True),
-            (u'Comma after the close', 24))
-
-        self.assertEquals(
-            scanstring('["Extra close"]]', 2, None, True),
-            (u'Extra close', 14))
-
-        self.assertEquals(
-            scanstring('{"Extra comma": true,}', 2, None, True),
-            (u'Extra comma', 14))
-
-        self.assertEquals(
-            scanstring('{"Extra value after close": true} "misplaced quoted value"', 2, None, True),
-            (u'Extra value after close', 26))
-
-        self.assertEquals(
-            scanstring('{"Illegal expression": 1 + 2}', 2, None, True),
-            (u'Illegal expression', 21))
-
-        self.assertEquals(
-            scanstring('{"Illegal invocation": alert()}', 2, None, True),
-            (u'Illegal invocation', 21))
-
-        self.assertEquals(
-            scanstring('{"Numbers cannot have leading zeroes": 013}', 2, None, True),
-            (u'Numbers cannot have leading zeroes', 37))
-
-        self.assertEquals(
-            scanstring('{"Numbers cannot be hex": 0x14}', 2, None, True),
-            (u'Numbers cannot be hex', 24))
-
-        self.assertEquals(
-            scanstring('[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]', 21, None, True),
-            (u'Too deep', 30))
-
-        self.assertEquals(
-            scanstring('{"Missing colon" null}', 2, None, True),
-            (u'Missing colon', 16))
-
-        self.assertEquals(
-            scanstring('{"Double colon":: null}', 2, None, True),
-            (u'Double colon', 15))
-
-        self.assertEquals(
-            scanstring('{"Comma instead of colon", null}', 2, None, True),
-            (u'Comma instead of colon', 25))
-
-        self.assertEquals(
-            scanstring('["Colon instead of comma": false]', 2, None, True),
-            (u'Colon instead of comma', 25))
-
-        self.assertEquals(
-            scanstring('["Bad value", truth]', 2, None, True),
-            (u'Bad value', 12))
-
-    def test_issue3623(self):
-        self.assertRaises(ValueError, json.decoder.scanstring, "xxx", 1,
-                          "xxx")
-        self.assertRaises(UnicodeDecodeError,
-                          json.encoder.encode_basestring_ascii, "xx\xff")
-
-    def test_overflow(self):
-        # Python 2.5 does not have maxsize
-        maxsize = getattr(sys, 'maxsize', sys.maxint)
-        self.assertRaises(OverflowError, json.decoder.scanstring, "xxx",
-                          maxsize + 1)
-
diff --git a/tablib/packages/simplejson/tests/test_separators.py b/tablib/packages/simplejson/tests/test_separators.py
deleted file mode 100644
index cbda93c..0000000
--- a/tablib/packages/simplejson/tests/test_separators.py
+++ /dev/null
@@ -1,42 +0,0 @@
-import textwrap
-from unittest import TestCase
-
-import simplejson as json
-
-
-class TestSeparators(TestCase):
-    def test_separators(self):
-        h = [['blorpie'], ['whoops'], [], 'd-shtaeou', 'd-nthiouh', 'i-vhbjkhnth',
-             {'nifty': 87}, {'field': 'yes', 'morefield': False} ]
-
-        expect = textwrap.dedent("""\
-        [
-          [
-            "blorpie"
-          ] ,
-          [
-            "whoops"
-          ] ,
-          [] ,
-          "d-shtaeou" ,
-          "d-nthiouh" ,
-          "i-vhbjkhnth" ,
-          {
-            "nifty" : 87
-          } ,
-          {
-            "field" : "yes" ,
-            "morefield" : false
-          }
-        ]""")
-
-
-        d1 = json.dumps(h)
-        d2 = json.dumps(h, indent='  ', sort_keys=True, separators=(' ,', ' : '))
-
-        h1 = json.loads(d1)
-        h2 = json.loads(d2)
-
-        self.assertEquals(h1, h)
-        self.assertEquals(h2, h)
-        self.assertEquals(d2, expect)
diff --git a/tablib/packages/simplejson/tests/test_speedups.py b/tablib/packages/simplejson/tests/test_speedups.py
deleted file mode 100644
index 4bf0875..0000000
--- a/tablib/packages/simplejson/tests/test_speedups.py
+++ /dev/null
@@ -1,21 +0,0 @@
-import decimal
-from unittest import TestCase
-
-from simplejson import decoder, encoder, scanner
-
-def has_speedups():
-    return encoder.c_make_encoder is not None
-
-class TestDecode(TestCase):
-    def test_make_scanner(self):
-        if not has_speedups():
-            return
-        self.assertRaises(AttributeError, scanner.c_make_scanner, 1)
-
-    def test_make_encoder(self):
-        if not has_speedups():
-            return
-        self.assertRaises(TypeError, encoder.c_make_encoder,
-            None,
-            "\xCD\x7D\x3D\x4E\x12\x4C\xF9\x79\xD7\x52\xBA\x82\xF2\x27\x4A\x7D\xA0\xCA\x75",
-            None)
diff --git a/tablib/packages/simplejson/tests/test_unicode.py b/tablib/packages/simplejson/tests/test_unicode.py
deleted file mode 100644
index f73e5bf..0000000
--- a/tablib/packages/simplejson/tests/test_unicode.py
+++ /dev/null
@@ -1,99 +0,0 @@
-from unittest import TestCase
-
-import simplejson as json
-
-class TestUnicode(TestCase):
-    def test_encoding1(self):
-        encoder = json.JSONEncoder(encoding='utf-8')
-        u = u'\N{GREEK SMALL LETTER ALPHA}\N{GREEK CAPITAL LETTER OMEGA}'
-        s = u.encode('utf-8')
-        ju = encoder.encode(u)
-        js = encoder.encode(s)
-        self.assertEquals(ju, js)
-
-    def test_encoding2(self):
-        u = u'\N{GREEK SMALL LETTER ALPHA}\N{GREEK CAPITAL LETTER OMEGA}'
-        s = u.encode('utf-8')
-        ju = json.dumps(u, encoding='utf-8')
-        js = json.dumps(s, encoding='utf-8')
-        self.assertEquals(ju, js)
-
-    def test_encoding3(self):
-        u = u'\N{GREEK SMALL LETTER ALPHA}\N{GREEK CAPITAL LETTER OMEGA}'
-        j = json.dumps(u)
-        self.assertEquals(j, '"\\u03b1\\u03a9"')
-
-    def test_encoding4(self):
-        u = u'\N{GREEK SMALL LETTER ALPHA}\N{GREEK CAPITAL LETTER OMEGA}'
-        j = json.dumps([u])
-        self.assertEquals(j, '["\\u03b1\\u03a9"]')
-
-    def test_encoding5(self):
-        u = u'\N{GREEK SMALL LETTER ALPHA}\N{GREEK CAPITAL LETTER OMEGA}'
-        j = json.dumps(u, ensure_ascii=False)
-        self.assertEquals(j, u'"' + u + u'"')
-
-    def test_encoding6(self):
-        u = u'\N{GREEK SMALL LETTER ALPHA}\N{GREEK CAPITAL LETTER OMEGA}'
-        j = json.dumps([u], ensure_ascii=False)
-        self.assertEquals(j, u'["' + u + u'"]')
-
-    def test_big_unicode_encode(self):
-        u = u'\U0001d120'
-        self.assertEquals(json.dumps(u), '"\\ud834\\udd20"')
-        self.assertEquals(json.dumps(u, ensure_ascii=False), u'"\U0001d120"')
-
-    def test_big_unicode_decode(self):
-        u = u'z\U0001d120x'
-        self.assertEquals(json.loads('"' + u + '"'), u)
-        self.assertEquals(json.loads('"z\\ud834\\udd20x"'), u)
-
-    def test_unicode_decode(self):
-        for i in range(0, 0xd7ff):
-            u = unichr(i)
-            #s = '"\\u{0:04x}"'.format(i)
-            s = '"\\u%04x"' % (i,)
-            self.assertEquals(json.loads(s), u)
-
-    def test_object_pairs_hook_with_unicode(self):
-        s = u'{"xkd":1, "kcw":2, "art":3, "hxm":4, "qrt":5, "pad":6, "hoy":7}'
-        p = [(u"xkd", 1), (u"kcw", 2), (u"art", 3), (u"hxm", 4),
-             (u"qrt", 5), (u"pad", 6), (u"hoy", 7)]
-        self.assertEqual(json.loads(s), eval(s))
-        self.assertEqual(json.loads(s, object_pairs_hook=lambda x: x), p)
-        od = json.loads(s, object_pairs_hook=json.OrderedDict)
-        self.assertEqual(od, json.OrderedDict(p))
-        self.assertEqual(type(od), json.OrderedDict)
-        # the object_pairs_hook takes priority over the object_hook
-        self.assertEqual(json.loads(s,
-                                    object_pairs_hook=json.OrderedDict,
-                                    object_hook=lambda x: None),
-                         json.OrderedDict(p))
-
-
-    def test_default_encoding(self):
-        self.assertEquals(json.loads(u'{"a": "\xe9"}'.encode('utf-8')),
-            {'a': u'\xe9'})
-
-    def test_unicode_preservation(self):
-        self.assertEquals(type(json.loads(u'""')), unicode)
-        self.assertEquals(type(json.loads(u'"a"')), unicode)
-        self.assertEquals(type(json.loads(u'["a"]')[0]), unicode)
-
-    def test_ensure_ascii_false_returns_unicode(self):
-        # http://code.google.com/p/simplejson/issues/detail?id=48
-        self.assertEquals(type(json.dumps([], ensure_ascii=False)), unicode)
-        self.assertEquals(type(json.dumps(0, ensure_ascii=False)), unicode)
-        self.assertEquals(type(json.dumps({}, ensure_ascii=False)), unicode)
-        self.assertEquals(type(json.dumps("", ensure_ascii=False)), unicode)
-
-    def test_ensure_ascii_false_bytestring_encoding(self):
-        # http://code.google.com/p/simplejson/issues/detail?id=48
-        doc1 = {u'quux': 'Arr\xc3\xaat sur images'}
-        doc2 = {u'quux': u'Arr\xeat sur images'}
-        doc_ascii = '{"quux": "Arr\\u00eat sur images"}'
-        doc_unicode = u'{"quux": "Arr\xeat sur images"}'
-        self.assertEquals(json.dumps(doc1), doc_ascii)
-        self.assertEquals(json.dumps(doc2), doc_ascii)
-        self.assertEquals(json.dumps(doc1, ensure_ascii=False), doc_unicode)
-        self.assertEquals(json.dumps(doc2, ensure_ascii=False), doc_unicode)
diff --git a/tablib/packages/simplejson/tool.py b/tablib/packages/simplejson/tool.py
deleted file mode 100644
index 73370db..0000000
--- a/tablib/packages/simplejson/tool.py
+++ /dev/null
@@ -1,39 +0,0 @@
-r"""Command-line tool to validate and pretty-print JSON
-
-Usage::
-
-    $ echo '{"json":"obj"}' | python -m simplejson.tool
-    {
-        "json": "obj"
-    }
-    $ echo '{ 1.2:3.4}' | python -m simplejson.tool
-    Expecting property name: line 1 column 2 (char 2)
-
-"""
-import sys
-import simplejson as json
-
-def main():
-    if len(sys.argv) == 1:
-        infile = sys.stdin
-        outfile = sys.stdout
-    elif len(sys.argv) == 2:
-        infile = open(sys.argv[1], 'rb')
-        outfile = sys.stdout
-    elif len(sys.argv) == 3:
-        infile = open(sys.argv[1], 'rb')
-        outfile = open(sys.argv[2], 'wb')
-    else:
-        raise SystemExit(sys.argv[0] + " [infile [outfile]]")
-    try:
-        obj = json.load(infile,
-                        object_pairs_hook=json.OrderedDict,
-                        use_decimal=True)
-    except ValueError, e:
-        raise SystemExit(e)
-    json.dump(obj, outfile, sort_keys=True, indent='    ', use_decimal=True)
-    outfile.write('\n')
-
-
-if __name__ == '__main__':
-    main()
diff --git a/tablib/packages/yaml/__init__.py b/tablib/packages/yaml/__init__.py
deleted file mode 100644
index c0fd1f3..0000000
--- a/tablib/packages/yaml/__init__.py
+++ /dev/null
@@ -1,288 +0,0 @@
-
-from error import *
-
-from tokens import *
-from events import *
-from nodes import *
-
-from loader import *
-from dumper import *
-
-__version__ = '3.09'
-
-try:
-    from cyaml import *
-    __with_libyaml__ = True
-except ImportError:
-    __with_libyaml__ = False
-
-def scan(stream, Loader=Loader):
-    """
-    Scan a YAML stream and produce scanning tokens.
-    """
-    loader = Loader(stream)
-    while loader.check_token():
-        yield loader.get_token()
-
-def parse(stream, Loader=Loader):
-    """
-    Parse a YAML stream and produce parsing events.
-    """
-    loader = Loader(stream)
-    while loader.check_event():
-        yield loader.get_event()
-
-def compose(stream, Loader=Loader):
-    """
-    Parse the first YAML document in a stream
-    and produce the corresponding representation tree.
-    """
-    loader = Loader(stream)
-    return loader.get_single_node()
-
-def compose_all(stream, Loader=Loader):
-    """
-    Parse all YAML documents in a stream
-    and produce corresponding representation trees.
-    """
-    loader = Loader(stream)
-    while loader.check_node():
-        yield loader.get_node()
-
-def load(stream, Loader=Loader):
-    """
-    Parse the first YAML document in a stream
-    and produce the corresponding Python object.
-    """
-    loader = Loader(stream)
-    return loader.get_single_data()
-
-def load_all(stream, Loader=Loader):
-    """
-    Parse all YAML documents in a stream
-    and produce corresponding Python objects.
-    """
-    loader = Loader(stream)
-    while loader.check_data():
-        yield loader.get_data()
-
-def safe_load(stream):
-    """
-    Parse the first YAML document in a stream
-    and produce the corresponding Python object.
-    Resolve only basic YAML tags.
-    """
-    return load(stream, SafeLoader)
-
-def safe_load_all(stream):
-    """
-    Parse all YAML documents in a stream
-    and produce corresponding Python objects.
-    Resolve only basic YAML tags.
-    """
-    return load_all(stream, SafeLoader)
-
-def emit(events, stream=None, Dumper=Dumper,
-        canonical=None, indent=None, width=None,
-        allow_unicode=None, line_break=None):
-    """
-    Emit YAML parsing events into a stream.
-    If stream is None, return the produced string instead.
-    """
-    getvalue = None
-    if stream is None:
-        from StringIO import StringIO
-        stream = StringIO()
-        getvalue = stream.getvalue
-    dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
-            allow_unicode=allow_unicode, line_break=line_break)
-    for event in events:
-        dumper.emit(event)
-    if getvalue:
-        return getvalue()
-
-def serialize_all(nodes, stream=None, Dumper=Dumper,
-        canonical=None, indent=None, width=None,
-        allow_unicode=None, line_break=None,
-        encoding='utf-8', explicit_start=None, explicit_end=None,
-        version=None, tags=None):
-    """
-    Serialize a sequence of representation trees into a YAML stream.
-    If stream is None, return the produced string instead.
-    """
-    getvalue = None
-    if stream is None:
-        if encoding is None:
-            from StringIO import StringIO
-        else:
-            from cStringIO import StringIO
-        stream = StringIO()
-        getvalue = stream.getvalue
-    dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
-            allow_unicode=allow_unicode, line_break=line_break,
-            encoding=encoding, version=version, tags=tags,
-            explicit_start=explicit_start, explicit_end=explicit_end)
-    dumper.open()
-    for node in nodes:
-        dumper.serialize(node)
-    dumper.close()
-    if getvalue:
-        return getvalue()
-
-def serialize(node, stream=None, Dumper=Dumper, **kwds):
-    """
-    Serialize a representation tree into a YAML stream.
-    If stream is None, return the produced string instead.
-    """
-    return serialize_all([node], stream, Dumper=Dumper, **kwds)
-
-def dump_all(documents, stream=None, Dumper=Dumper,
-        default_style=None, default_flow_style=None,
-        canonical=None, indent=None, width=None,
-        allow_unicode=None, line_break=None,
-        encoding='utf-8', explicit_start=None, explicit_end=None,
-        version=None, tags=None):
-    """
-    Serialize a sequence of Python objects into a YAML stream.
-    If stream is None, return the produced string instead.
-    """
-    getvalue = None
-    if stream is None:
-        if encoding is None:
-            from StringIO import StringIO
-        else:
-            from cStringIO import StringIO
-        stream = StringIO()
-        getvalue = stream.getvalue
-    dumper = Dumper(stream, default_style=default_style,
-            default_flow_style=default_flow_style,
-            canonical=canonical, indent=indent, width=width,
-            allow_unicode=allow_unicode, line_break=line_break,
-            encoding=encoding, version=version, tags=tags,
-            explicit_start=explicit_start, explicit_end=explicit_end)
-    dumper.open()
-    for data in documents:
-        dumper.represent(data)
-    dumper.close()
-    if getvalue:
-        return getvalue()
-
-def dump(data, stream=None, Dumper=Dumper, **kwds):
-    """
-    Serialize a Python object into a YAML stream.
-    If stream is None, return the produced string instead.
-    """
-    return dump_all([data], stream, Dumper=Dumper, **kwds)
-
-def safe_dump_all(documents, stream=None, **kwds):
-    """
-    Serialize a sequence of Python objects into a YAML stream.
-    Produce only basic YAML tags.
-    If stream is None, return the produced string instead.
-    """
-    return dump_all(documents, stream, Dumper=SafeDumper, **kwds)
-
-def safe_dump(data, stream=None, **kwds):
-    """
-    Serialize a Python object into a YAML stream.
-    Produce only basic YAML tags.
-    If stream is None, return the produced string instead.
-    """
-    return dump_all([data], stream, Dumper=SafeDumper, **kwds)
-
-def add_implicit_resolver(tag, regexp, first=None,
-        Loader=Loader, Dumper=Dumper):
-    """
-    Add an implicit scalar detector.
-    If an implicit scalar value matches the given regexp,
-    the corresponding tag is assigned to the scalar.
-    first is a sequence of possible initial characters or None.
-    """
-    Loader.add_implicit_resolver(tag, regexp, first)
-    Dumper.add_implicit_resolver(tag, regexp, first)
-
-def add_path_resolver(tag, path, kind=None, Loader=Loader, Dumper=Dumper):
-    """
-    Add a path based resolver for the given tag.
-    A path is a list of keys that forms a path
-    to a node in the representation tree.
-    Keys can be string values, integers, or None.
-    """
-    Loader.add_path_resolver(tag, path, kind)
-    Dumper.add_path_resolver(tag, path, kind)
-
-def add_constructor(tag, constructor, Loader=Loader):
-    """
-    Add a constructor for the given tag.
-    Constructor is a function that accepts a Loader instance
-    and a node object and produces the corresponding Python object.
-    """
-    Loader.add_constructor(tag, constructor)
-
-def add_multi_constructor(tag_prefix, multi_constructor, Loader=Loader):
-    """
-    Add a multi-constructor for the given tag prefix.
-    Multi-constructor is called for a node if its tag starts with tag_prefix.
-    Multi-constructor accepts a Loader instance, a tag suffix,
-    and a node object and produces the corresponding Python object.
-    """
-    Loader.add_multi_constructor(tag_prefix, multi_constructor)
-
-def add_representer(data_type, representer, Dumper=Dumper):
-    """
-    Add a representer for the given type.
-    Representer is a function accepting a Dumper instance
-    and an instance of the given data type
-    and producing the corresponding representation node.
-    """
-    Dumper.add_representer(data_type, representer)
-
-def add_multi_representer(data_type, multi_representer, Dumper=Dumper):
-    """
-    Add a representer for the given type.
-    Multi-representer is a function accepting a Dumper instance
-    and an instance of the given data type or subtype
-    and producing the corresponding representation node.
-    """
-    Dumper.add_multi_representer(data_type, multi_representer)
-
-class YAMLObjectMetaclass(type):
-    """
-    The metaclass for YAMLObject.
-    """
-    def __init__(cls, name, bases, kwds):
-        super(YAMLObjectMetaclass, cls).__init__(name, bases, kwds)
-        if 'yaml_tag' in kwds and kwds['yaml_tag'] is not None:
-            cls.yaml_loader.add_constructor(cls.yaml_tag, cls.from_yaml)
-            cls.yaml_dumper.add_representer(cls, cls.to_yaml)
-
-class YAMLObject(object):
-    """
-    An object that can dump itself to a YAML stream
-    and load itself from a YAML stream.
-    """
-
-    __metaclass__ = YAMLObjectMetaclass
-    __slots__ = ()  # no direct instantiation, so allow immutable subclasses
-
-    yaml_loader = Loader
-    yaml_dumper = Dumper
-
-    yaml_tag = None
-    yaml_flow_style = None
-
-    def from_yaml(cls, loader, node):
-        """
-        Convert a representation node to a Python object.
-        """
-        return loader.construct_yaml_object(node, cls)
-    from_yaml = classmethod(from_yaml)
-
-    def to_yaml(cls, dumper, data):
-        """
-        Convert a Python object to a representation node.
-        """
-        return dumper.represent_yaml_object(cls.yaml_tag, data, cls,
-                flow_style=cls.yaml_flow_style)
-    to_yaml = classmethod(to_yaml)
-
diff --git a/tablib/packages/yaml/composer.py b/tablib/packages/yaml/composer.py
deleted file mode 100644
index 06e5ac7..0000000
--- a/tablib/packages/yaml/composer.py
+++ /dev/null
@@ -1,139 +0,0 @@
-
-__all__ = ['Composer', 'ComposerError']
-
-from error import MarkedYAMLError
-from events import *
-from nodes import *
-
-class ComposerError(MarkedYAMLError):
-    pass
-
-class Composer(object):
-
-    def __init__(self):
-        self.anchors = {}
-
-    def check_node(self):
-        # Drop the STREAM-START event.
-        if self.check_event(StreamStartEvent):
-            self.get_event()
-
-        # If there are more documents available?
-        return not self.check_event(StreamEndEvent)
-
-    def get_node(self):
-        # Get the root node of the next document.
-        if not self.check_event(StreamEndEvent):
-            return self.compose_document()
-
-    def get_single_node(self):
-        # Drop the STREAM-START event.
-        self.get_event()
-
-        # Compose a document if the stream is not empty.
-        document = None
-        if not self.check_event(StreamEndEvent):
-            document = self.compose_document()
-
-        # Ensure that the stream contains no more documents.
-        if not self.check_event(StreamEndEvent):
-            event = self.get_event()
-            raise ComposerError("expected a single document in the stream",
-                    document.start_mark, "but found another document",
-                    event.start_mark)
-
-        # Drop the STREAM-END event.
-        self.get_event()
-
-        return document
-
-    def compose_document(self):
-        # Drop the DOCUMENT-START event.
-        self.get_event()
-
-        # Compose the root node.
-        node = self.compose_node(None, None)
-
-        # Drop the DOCUMENT-END event.
-        self.get_event()
-
-        self.anchors = {}
-        return node
-
-    def compose_node(self, parent, index):
-        if self.check_event(AliasEvent):
-            event = self.get_event()
-            anchor = event.anchor
-            if anchor not in self.anchors:
-                raise ComposerError(None, None, "found undefined alias %r"
-                        % anchor.encode('utf-8'), event.start_mark)
-            return self.anchors[anchor]
-        event = self.peek_event()
-        anchor = event.anchor
-        if anchor is not None:
-            if anchor in self.anchors:
-                raise ComposerError("found duplicate anchor %r; first occurence"
-                        % anchor.encode('utf-8'), self.anchors[anchor].start_mark,
-                        "second occurence", event.start_mark)
-        self.descend_resolver(parent, index)
-        if self.check_event(ScalarEvent):
-            node = self.compose_scalar_node(anchor)
-        elif self.check_event(SequenceStartEvent):
-            node = self.compose_sequence_node(anchor)
-        elif self.check_event(MappingStartEvent):
-            node = self.compose_mapping_node(anchor)
-        self.ascend_resolver()
-        return node
-
-    def compose_scalar_node(self, anchor):
-        event = self.get_event()
-        tag = event.tag
-        if tag is None or tag == u'!':
-            tag = self.resolve(ScalarNode, event.value, event.implicit)
-        node = ScalarNode(tag, event.value,
-                event.start_mark, event.end_mark, style=event.style)
-        if anchor is not None:
-            self.anchors[anchor] = node
-        return node
-
-    def compose_sequence_node(self, anchor):
-        start_event = self.get_event()
-        tag = start_event.tag
-        if tag is None or tag == u'!':
-            tag = self.resolve(SequenceNode, None, start_event.implicit)
-        node = SequenceNode(tag, [],
-                start_event.start_mark, None,
-                flow_style=start_event.flow_style)
-        if anchor is not None:
-            self.anchors[anchor] = node
-        index = 0
-        while not self.check_event(SequenceEndEvent):
-            node.value.append(self.compose_node(node, index))
-            index += 1
-        end_event = self.get_event()
-        node.end_mark = end_event.end_mark
-        return node
-
-    def compose_mapping_node(self, anchor):
-        start_event = self.get_event()
-        tag = start_event.tag
-        if tag is None or tag == u'!':
-            tag = self.resolve(MappingNode, None, start_event.implicit)
-        node = MappingNode(tag, [],
-                start_event.start_mark, None,
-                flow_style=start_event.flow_style)
-        if anchor is not None:
-            self.anchors[anchor] = node
-        while not self.check_event(MappingEndEvent):
-            #key_event = self.peek_event()
-            item_key = self.compose_node(node, None)
-            #if item_key in node.value:
-            #    raise ComposerError("while composing a mapping", start_event.start_mark,
-            #            "found duplicate key", key_event.start_mark)
-            item_value = self.compose_node(node, item_key)
-            #node.value[item_key] = item_value
-            node.value.append((item_key, item_value))
-        end_event = self.get_event()
-        node.end_mark = end_event.end_mark
-        return node
-
diff --git a/tablib/packages/yaml/constructor.py b/tablib/packages/yaml/constructor.py
deleted file mode 100644
index 420c434..0000000
--- a/tablib/packages/yaml/constructor.py
+++ /dev/null
@@ -1,684 +0,0 @@
-
-__all__ = ['BaseConstructor', 'SafeConstructor', 'Constructor',
-    'ConstructorError']
-
-from error import *
-from nodes import *
-
-import datetime
-
-try:
-    set
-except NameError:
-    from sets import Set as set
-
-import binascii, re, sys, types
-
-class ConstructorError(MarkedYAMLError):
-    pass
-
-class BaseConstructor(object):
-
-    yaml_constructors = {}
-    yaml_multi_constructors = {}
-
-    def __init__(self):
-        self.constructed_objects = {}
-        self.recursive_objects = {}
-        self.state_generators = []
-        self.deep_construct = False
-
-    def check_data(self):
-        # If there are more documents available?
-        return self.check_node()
-
-    def get_data(self):
-        # Construct and return the next document.
-        if self.check_node():
-            return self.construct_document(self.get_node())
-
-    def get_single_data(self):
-        # Ensure that the stream contains a single document and construct it.
-        node = self.get_single_node()
-        if node is not None:
-            return self.construct_document(node)
-        return None
-
-    def construct_document(self, node):
-        data = self.construct_object(node)
-        while self.state_generators:
-            state_generators = self.state_generators
-            self.state_generators = []
-            for generator in state_generators:
-                for dummy in generator:
-                    pass
-        self.constructed_objects = {}
-        self.recursive_objects = {}
-        self.deep_construct = False
-        return data
-
-    def construct_object(self, node, deep=False):
-        if deep:
-            old_deep = self.deep_construct
-            self.deep_construct = True
-        if node in self.constructed_objects:
-            return self.constructed_objects[node]
-        if node in self.recursive_objects:
-            raise ConstructorError(None, None,
-                    "found unconstructable recursive node", node.start_mark)
-        self.recursive_objects[node] = None
-        constructor = None
-        tag_suffix = None
-        if node.tag in self.yaml_constructors:
-            constructor = self.yaml_constructors[node.tag]
-        else:
-            for tag_prefix in self.yaml_multi_constructors:
-                if node.tag.startswith(tag_prefix):
-                    tag_suffix = node.tag[len(tag_prefix):]
-                    constructor = self.yaml_multi_constructors[tag_prefix]
-                    break
-            else:
-                if None in self.yaml_multi_constructors:
-                    tag_suffix = node.tag
-                    constructor = self.yaml_multi_constructors[None]
-                elif None in self.yaml_constructors:
-                    constructor = self.yaml_constructors[None]
-                elif isinstance(node, ScalarNode):
-                    constructor = self.__class__.construct_scalar
-                elif isinstance(node, SequenceNode):
-                    constructor = self.__class__.construct_sequence
-                elif isinstance(node, MappingNode):
-                    constructor = self.__class__.construct_mapping
-        if tag_suffix is None:
-            data = constructor(self, node)
-        else:
-            data = constructor(self, tag_suffix, node)
-        if isinstance(data, types.GeneratorType):
-            generator = data
-            data = generator.next()
-            if self.deep_construct:
-                for dummy in generator:
-                    pass
-            else:
-                self.state_generators.append(generator)
-        self.constructed_objects[node] = data
-        del self.recursive_objects[node]
-        if deep:
-            self.deep_construct = old_deep
-        return data
-
-    def construct_scalar(self, node):
-        if not isinstance(node, ScalarNode):
-            raise ConstructorError(None, None,
-                    "expected a scalar node, but found %s" % node.id,
-                    node.start_mark)
-        return node.value
-
-    def construct_sequence(self, node, deep=False):
-        if not isinstance(node, SequenceNode):
-            raise ConstructorError(None, None,
-                    "expected a sequence node, but found %s" % node.id,
-                    node.start_mark)
-        return [self.construct_object(child, deep=deep)
-                for child in node.value]
-
-    def construct_mapping(self, node, deep=False):
-        if not isinstance(node, MappingNode):
-            raise ConstructorError(None, None,
-                    "expected a mapping node, but found %s" % node.id,
-                    node.start_mark)
-        mapping = {}
-        for key_node, value_node in node.value:
-            key = self.construct_object(key_node, deep=deep)
-            try:
-                hash(key)
-            except TypeError, exc:
-                raise ConstructorError("while constructing a mapping", node.start_mark,
-                        "found unacceptable key (%s)" % exc, key_node.start_mark)
-            value = self.construct_object(value_node, deep=deep)
-            mapping[key] = value
-        return mapping
-
-    def construct_pairs(self, node, deep=False):
-        if not isinstance(node, MappingNode):
-            raise ConstructorError(None, None,
-                    "expected a mapping node, but found %s" % node.id,
-                    node.start_mark)
-        pairs = []
-        for key_node, value_node in node.value:
-            key = self.construct_object(key_node, deep=deep)
-            value = self.construct_object(value_node, deep=deep)
-            pairs.append((key, value))
-        return pairs
-
-    def add_constructor(cls, tag, constructor):
-        if not 'yaml_constructors' in cls.__dict__:
-            cls.yaml_constructors = cls.yaml_constructors.copy()
-        cls.yaml_constructors[tag] = constructor
-    add_constructor = classmethod(add_constructor)
-
-    def add_multi_constructor(cls, tag_prefix, multi_constructor):
-        if not 'yaml_multi_constructors' in cls.__dict__:
-            cls.yaml_multi_constructors = cls.yaml_multi_constructors.copy()
-        cls.yaml_multi_constructors[tag_prefix] = multi_constructor
-    add_multi_constructor = classmethod(add_multi_constructor)
-
-class SafeConstructor(BaseConstructor):
-
-    def construct_scalar(self, node):
-        if isinstance(node, MappingNode):
-            for key_node, value_node in node.value:
-                if key_node.tag == u'tag:yaml.org,2002:value':
-                    return self.construct_scalar(value_node)
-        return BaseConstructor.construct_scalar(self, node)
-
-    def flatten_mapping(self, node):
-        merge = []
-        index = 0
-        while index < len(node.value):
-            key_node, value_node = node.value[index]
-            if key_node.tag == u'tag:yaml.org,2002:merge':
-                del node.value[index]
-                if isinstance(value_node, MappingNode):
-                    self.flatten_mapping(value_node)
-                    merge.extend(value_node.value)
-                elif isinstance(value_node, SequenceNode):
-                    submerge = []
-                    for subnode in value_node.value:
-                        if not isinstance(subnode, MappingNode):
-                            raise ConstructorError("while constructing a mapping",
-                                    node.start_mark,
-                                    "expected a mapping for merging, but found %s"
-                                    % subnode.id, subnode.start_mark)
-                        self.flatten_mapping(subnode)
-                        submerge.append(subnode.value)
-                    submerge.reverse()
-                    for value in submerge:
-                        merge.extend(value)
-                else:
-                    raise ConstructorError("while constructing a mapping", node.start_mark,
-                            "expected a mapping or list of mappings for merging, but found %s"
-                            % value_node.id, value_node.start_mark)
-            elif key_node.tag == u'tag:yaml.org,2002:value':
-                key_node.tag = u'tag:yaml.org,2002:str'
-                index += 1
-            else:
-                index += 1
-        if merge:
-            node.value = merge + node.value
-
-    def construct_mapping(self, node, deep=False):
-        if isinstance(node, MappingNode):
-            self.flatten_mapping(node)
-        return BaseConstructor.construct_mapping(self, node, deep=deep)
-
-    def construct_yaml_null(self, node):
-        self.construct_scalar(node)
-        return None
-
-    bool_values = {
-        u'yes':     True,
-        u'no':      False,
-        u'true':    True,
-        u'false':   False,
-        u'on':      True,
-        u'off':     False,
-    }
-
-    def construct_yaml_bool(self, node):
-        value = self.construct_scalar(node)
-        return self.bool_values[value.lower()]
-
-    def construct_yaml_int(self, node):
-        value = str(self.construct_scalar(node))
-        value = value.replace('_', '')
-        sign = +1
-        if value[0] == '-':
-            sign = -1
-        if value[0] in '+-':
-            value = value[1:]
-        if value == '0':
-            return 0
-        elif value.startswith('0b'):
-            return sign*int(value[2:], 2)
-        elif value.startswith('0x'):
-            return sign*int(value[2:], 16)
-        elif value[0] == '0':
-            return sign*int(value, 8)
-        elif ':' in value:
-            digits = [int(part) for part in value.split(':')]
-            digits.reverse()
-            base = 1
-            value = 0
-            for digit in digits:
-                value += digit*base
-                base *= 60
-            return sign*value
-        else:
-            return sign*int(value)
-
-    inf_value = 1e300
-    while inf_value != inf_value*inf_value:
-        inf_value *= inf_value
-    nan_value = -inf_value/inf_value   # Trying to make a quiet NaN (like C99).
-
-    def construct_yaml_float(self, node):
-        value = str(self.construct_scalar(node))
-        value = value.replace('_', '').lower()
-        sign = +1
-        if value[0] == '-':
-            sign = -1
-        if value[0] in '+-':
-            value = value[1:]
-        if value == '.inf':
-            return sign*self.inf_value
-        elif value == '.nan':
-            return self.nan_value
-        elif ':' in value:
-            digits = [float(part) for part in value.split(':')]
-            digits.reverse()
-            base = 1
-            value = 0.0
-            for digit in digits:
-                value += digit*base
-                base *= 60
-            return sign*value
-        else:
-            return sign*float(value)
-
-    def construct_yaml_binary(self, node):
-        value = self.construct_scalar(node)
-        try:
-            return str(value).decode('base64')
-        except (binascii.Error, UnicodeEncodeError), exc:
-            raise ConstructorError(None, None,
-                    "failed to decode base64 data: %s" % exc, node.start_mark) 
-
-    timestamp_regexp = re.compile(
-            ur'''^(?P<year>[0-9][0-9][0-9][0-9])
-                -(?P<month>[0-9][0-9]?)
-                -(?P<day>[0-9][0-9]?)
-                (?:(?:[Tt]|[ \t]+)
-                (?P<hour>[0-9][0-9]?)
-                :(?P<minute>[0-9][0-9])
-                :(?P<second>[0-9][0-9])
-                (?:\.(?P<fraction>[0-9]*))?
-                (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
-                (?::(?P<tz_minute>[0-9][0-9]))?))?)?$''', re.X)
-
-    def construct_yaml_timestamp(self, node):
-        value = self.construct_scalar(node)
-        match = self.timestamp_regexp.match(node.value)
-        values = match.groupdict()
-        year = int(values['year'])
-        month = int(values['month'])
-        day = int(values['day'])
-        if not values['hour']:
-            return datetime.date(year, month, day)
-        hour = int(values['hour'])
-        minute = int(values['minute'])
-        second = int(values['second'])
-        fraction = 0
-        if values['fraction']:
-            fraction = values['fraction'][:6]
-            while len(fraction) < 6:
-                fraction += '0'
-            fraction = int(fraction)
-        delta = None
-        if values['tz_sign']:
-            tz_hour = int(values['tz_hour'])
-            tz_minute = int(values['tz_minute'] or 0)
-            delta = datetime.timedelta(hours=tz_hour, minutes=tz_minute)
-            if values['tz_sign'] == '-':
-                delta = -delta
-        data = datetime.datetime(year, month, day, hour, minute, second, fraction)
-        if delta:
-            data -= delta
-        return data
-
-    def construct_yaml_omap(self, node):
-        # Note: we do not check for duplicate keys, because it's too
-        # CPU-expensive.
-        omap = []
-        yield omap
-        if not isinstance(node, SequenceNode):
-            raise ConstructorError("while constructing an ordered map", node.start_mark,
-                    "expected a sequence, but found %s" % node.id, node.start_mark)
-        for subnode in node.value:
-            if not isinstance(subnode, MappingNode):
-                raise ConstructorError("while constructing an ordered map", node.start_mark,
-                        "expected a mapping of length 1, but found %s" % subnode.id,
-                        subnode.start_mark)
-            if len(subnode.value) != 1:
-                raise ConstructorError("while constructing an ordered map", node.start_mark,
-                        "expected a single mapping item, but found %d items" % len(subnode.value),
-                        subnode.start_mark)
-            key_node, value_node = subnode.value[0]
-            key = self.construct_object(key_node)
-            value = self.construct_object(value_node)
-            omap.append((key, value))
-
-    def construct_yaml_pairs(self, node):
-        # Note: the same code as `construct_yaml_omap`.
-        pairs = []
-        yield pairs
-        if not isinstance(node, SequenceNode):
-            raise ConstructorError("while constructing pairs", node.start_mark,
-                    "expected a sequence, but found %s" % node.id, node.start_mark)
-        for subnode in node.value:
-            if not isinstance(subnode, MappingNode):
-                raise ConstructorError("while constructing pairs", node.start_mark,
-                        "expected a mapping of length 1, but found %s" % subnode.id,
-                        subnode.start_mark)
-            if len(subnode.value) != 1:
-                raise ConstructorError("while constructing pairs", node.start_mark,
-                        "expected a single mapping item, but found %d items" % len(subnode.value),
-                        subnode.start_mark)
-            key_node, value_node = subnode.value[0]
-            key = self.construct_object(key_node)
-            value = self.construct_object(value_node)
-            pairs.append((key, value))
-
-    def construct_yaml_set(self, node):
-        data = set()
-        yield data
-        value = self.construct_mapping(node)
-        data.update(value)
-
-    def construct_yaml_str(self, node):
-        value = self.construct_scalar(node)
-        try:
-            return value.encode('ascii')
-        except UnicodeEncodeError:
-            return value
-
-    def construct_yaml_seq(self, node):
-        data = []
-        yield data
-        data.extend(self.construct_sequence(node))
-
-    def construct_yaml_map(self, node):
-        data = {}
-        yield data
-        value = self.construct_mapping(node)
-        data.update(value)
-
-    def construct_yaml_object(self, node, cls):
-        data = cls.__new__(cls)
-        yield data
-        if hasattr(data, '__setstate__'):
-            state = self.construct_mapping(node, deep=True)
-            data.__setstate__(state)
-        else:
-            state = self.construct_mapping(node)
-            data.__dict__.update(state)
-
-    def construct_undefined(self, node):
-        raise ConstructorError(None, None,
-                "could not determine a constructor for the tag %r" % node.tag.encode('utf-8'),
-                node.start_mark)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:null',
-        SafeConstructor.construct_yaml_null)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:bool',
-        SafeConstructor.construct_yaml_bool)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:int',
-        SafeConstructor.construct_yaml_int)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:float',
-        SafeConstructor.construct_yaml_float)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:binary',
-        SafeConstructor.construct_yaml_binary)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:timestamp',
-        SafeConstructor.construct_yaml_timestamp)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:omap',
-        SafeConstructor.construct_yaml_omap)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:pairs',
-        SafeConstructor.construct_yaml_pairs)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:set',
-        SafeConstructor.construct_yaml_set)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:str',
-        SafeConstructor.construct_yaml_str)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:seq',
-        SafeConstructor.construct_yaml_seq)
-
-SafeConstructor.add_constructor(
-        u'tag:yaml.org,2002:map',
-        SafeConstructor.construct_yaml_map)
-
-SafeConstructor.add_constructor(None,
-        SafeConstructor.construct_undefined)
-
-class Constructor(SafeConstructor):
-
-    def construct_python_str(self, node):
-        return self.construct_scalar(node).encode('utf-8')
-
-    def construct_python_unicode(self, node):
-        return self.construct_scalar(node)
-
-    def construct_python_long(self, node):
-        return long(self.construct_yaml_int(node))
-
-    def construct_python_complex(self, node):
-       return complex(self.construct_scalar(node))
-
-    def construct_python_tuple(self, node):
-        return tuple(self.construct_sequence(node))
-
-    def find_python_module(self, name, mark):
-        if not name:
-            raise ConstructorError("while constructing a Python module", mark,
-                    "expected non-empty name appended to the tag", mark)
-        try:
-            __import__(name)
-        except ImportError, exc:
-            raise ConstructorError("while constructing a Python module", mark,
-                    "cannot find module %r (%s)" % (name.encode('utf-8'), exc), mark)
-        return sys.modules[name]
-
-    def find_python_name(self, name, mark):
-        if not name:
-            raise ConstructorError("while constructing a Python object", mark,
-                    "expected non-empty name appended to the tag", mark)
-        if u'.' in name:
-            # Python 2.4 only
-            #module_name, object_name = name.rsplit('.', 1)
-            items = name.split('.')
-            object_name = items.pop()
-            module_name = '.'.join(items)
-        else:
-            module_name = '__builtin__'
-            object_name = name
-        try:
-            __import__(module_name)
-        except ImportError, exc:
-            raise ConstructorError("while constructing a Python object", mark,
-                    "cannot find module %r (%s)" % (module_name.encode('utf-8'), exc), mark)
-        module = sys.modules[module_name]
-        if not hasattr(module, object_name):
-            raise ConstructorError("while constructing a Python object", mark,
-                    "cannot find %r in the module %r" % (object_name.encode('utf-8'),
-                        module.__name__), mark)
-        return getattr(module, object_name)
-
-    def construct_python_name(self, suffix, node):
-        value = self.construct_scalar(node)
-        if value:
-            raise ConstructorError("while constructing a Python name", node.start_mark,
-                    "expected the empty value, but found %r" % value.encode('utf-8'),
-                    node.start_mark)
-        return self.find_python_name(suffix, node.start_mark)
-
-    def construct_python_module(self, suffix, node):
-        value = self.construct_scalar(node)
-        if value:
-            raise ConstructorError("while constructing a Python module", node.start_mark,
-                    "expected the empty value, but found %r" % value.encode('utf-8'),
-                    node.start_mark)
-        return self.find_python_module(suffix, node.start_mark)
-
-    class classobj: pass
-
-    def make_python_instance(self, suffix, node,
-            args=None, kwds=None, newobj=False):
-        if not args:
-            args = []
-        if not kwds:
-            kwds = {}
-        cls = self.find_python_name(suffix, node.start_mark)
-        if newobj and isinstance(cls, type(self.classobj))  \
-                and not args and not kwds:
-            instance = self.classobj()
-            instance.__class__ = cls
-            return instance
-        elif newobj and isinstance(cls, type):
-            return cls.__new__(cls, *args, **kwds)
-        else:
-            return cls(*args, **kwds)
-
-    def set_python_instance_state(self, instance, state):
-        if hasattr(instance, '__setstate__'):
-            instance.__setstate__(state)
-        else:
-            slotstate = {}
-            if isinstance(state, tuple) and len(state) == 2:
-                state, slotstate = state
-            if hasattr(instance, '__dict__'):
-                instance.__dict__.update(state)
-            elif state:
-                slotstate.update(state)
-            for key, value in slotstate.items():
-                setattr(object, key, value)
-
-    def construct_python_object(self, suffix, node):
-        # Format:
-        #   !!python/object:module.name { ... state ... }
-        instance = self.make_python_instance(suffix, node, newobj=True)
-        yield instance
-        deep = hasattr(instance, '__setstate__')
-        state = self.construct_mapping(node, deep=deep)
-        self.set_python_instance_state(instance, state)
-
-    def construct_python_object_apply(self, suffix, node, newobj=False):
-        # Format:
-        #   !!python/object/apply       # (or !!python/object/new)
-        #   args: [ ... arguments ... ]
-        #   kwds: { ... keywords ... }
-        #   state: ... state ...
-        #   listitems: [ ... listitems ... ]
-        #   dictitems: { ... dictitems ... }
-        # or short format:
-        #   !!python/object/apply [ ... arguments ... ]
-        # The difference between !!python/object/apply and !!python/object/new
-        # is how an object is created, check make_python_instance for details.
-        if isinstance(node, SequenceNode):
-            args = self.construct_sequence(node, deep=True)
-            kwds = {}
-            state = {}
-            listitems = []
-            dictitems = {}
-        else:
-            value = self.construct_mapping(node, deep=True)
-            args = value.get('args', [])
-            kwds = value.get('kwds', {})
-            state = value.get('state', {})
-            listitems = value.get('listitems', [])
-            dictitems = value.get('dictitems', {})
-        instance = self.make_python_instance(suffix, node, args, kwds, newobj)
-        if state:
-            self.set_python_instance_state(instance, state)
-        if listitems:
-            instance.extend(listitems)
-        if dictitems:
-            for key in dictitems:
-                instance[key] = dictitems[key]
-        return instance
-
-    def construct_python_object_new(self, suffix, node):
-        return self.construct_python_object_apply(suffix, node, newobj=True)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/none',
-    Constructor.construct_yaml_null)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/bool',
-    Constructor.construct_yaml_bool)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/str',
-    Constructor.construct_python_str)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/unicode',
-    Constructor.construct_python_unicode)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/int',
-    Constructor.construct_yaml_int)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/long',
-    Constructor.construct_python_long)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/float',
-    Constructor.construct_yaml_float)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/complex',
-    Constructor.construct_python_complex)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/list',
-    Constructor.construct_yaml_seq)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/tuple',
-    Constructor.construct_python_tuple)
-
-Constructor.add_constructor(
-    u'tag:yaml.org,2002:python/dict',
-    Constructor.construct_yaml_map)
-
-Constructor.add_multi_constructor(
-    u'tag:yaml.org,2002:python/name:',
-    Constructor.construct_python_name)
-
-Constructor.add_multi_constructor(
-    u'tag:yaml.org,2002:python/module:',
-    Constructor.construct_python_module)
-
-Constructor.add_multi_constructor(
-    u'tag:yaml.org,2002:python/object:',
-    Constructor.construct_python_object)
-
-Constructor.add_multi_constructor(
-    u'tag:yaml.org,2002:python/object/apply:',
-    Constructor.construct_python_object_apply)
-
-Constructor.add_multi_constructor(
-    u'tag:yaml.org,2002:python/object/new:',
-    Constructor.construct_python_object_new)
-
diff --git a/tablib/packages/yaml/cyaml.py b/tablib/packages/yaml/cyaml.py
deleted file mode 100644
index 68dcd75..0000000
--- a/tablib/packages/yaml/cyaml.py
+++ /dev/null
@@ -1,85 +0,0 @@
-
-__all__ = ['CBaseLoader', 'CSafeLoader', 'CLoader',
-        'CBaseDumper', 'CSafeDumper', 'CDumper']
-
-from _yaml import CParser, CEmitter
-
-from constructor import *
-
-from serializer import *
-from representer import *
-
-from resolver import *
-
-class CBaseLoader(CParser, BaseConstructor, BaseResolver):
-
-    def __init__(self, stream):
-        CParser.__init__(self, stream)
-        BaseConstructor.__init__(self)
-        BaseResolver.__init__(self)
-
-class CSafeLoader(CParser, SafeConstructor, Resolver):
-
-    def __init__(self, stream):
-        CParser.__init__(self, stream)
-        SafeConstructor.__init__(self)
-        Resolver.__init__(self)
-
-class CLoader(CParser, Constructor, Resolver):
-
-    def __init__(self, stream):
-        CParser.__init__(self, stream)
-        Constructor.__init__(self)
-        Resolver.__init__(self)
-
-class CBaseDumper(CEmitter, BaseRepresenter, BaseResolver):
-
-    def __init__(self, stream,
-            default_style=None, default_flow_style=None,
-            canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None,
-            encoding=None, explicit_start=None, explicit_end=None,
-            version=None, tags=None):
-        CEmitter.__init__(self, stream, canonical=canonical,
-                indent=indent, width=width, encoding=encoding,
-                allow_unicode=allow_unicode, line_break=line_break,
-                explicit_start=explicit_start, explicit_end=explicit_end,
-                version=version, tags=tags)
-        Representer.__init__(self, default_style=default_style,
-                default_flow_style=default_flow_style)
-        Resolver.__init__(self)
-
-class CSafeDumper(CEmitter, SafeRepresenter, Resolver):
-
-    def __init__(self, stream,
-            default_style=None, default_flow_style=None,
-            canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None,
-            encoding=None, explicit_start=None, explicit_end=None,
-            version=None, tags=None):
-        CEmitter.__init__(self, stream, canonical=canonical,
-                indent=indent, width=width, encoding=encoding,
-                allow_unicode=allow_unicode, line_break=line_break,
-                explicit_start=explicit_start, explicit_end=explicit_end,
-                version=version, tags=tags)
-        SafeRepresenter.__init__(self, default_style=default_style,
-                default_flow_style=default_flow_style)
-        Resolver.__init__(self)
-
-class CDumper(CEmitter, Serializer, Representer, Resolver):
-
-    def __init__(self, stream,
-            default_style=None, default_flow_style=None,
-            canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None,
-            encoding=None, explicit_start=None, explicit_end=None,
-            version=None, tags=None):
-        CEmitter.__init__(self, stream, canonical=canonical,
-                indent=indent, width=width, encoding=encoding,
-                allow_unicode=allow_unicode, line_break=line_break,
-                explicit_start=explicit_start, explicit_end=explicit_end,
-                version=version, tags=tags)
-        Representer.__init__(self, default_style=default_style,
-                default_flow_style=default_flow_style)
-        Resolver.__init__(self)
-
diff --git a/tablib/packages/yaml/dumper.py b/tablib/packages/yaml/dumper.py
deleted file mode 100644
index f811d2c..0000000
--- a/tablib/packages/yaml/dumper.py
+++ /dev/null
@@ -1,62 +0,0 @@
-
-__all__ = ['BaseDumper', 'SafeDumper', 'Dumper']
-
-from emitter import *
-from serializer import *
-from representer import *
-from resolver import *
-
-class BaseDumper(Emitter, Serializer, BaseRepresenter, BaseResolver):
-
-    def __init__(self, stream,
-            default_style=None, default_flow_style=None,
-            canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None,
-            encoding=None, explicit_start=None, explicit_end=None,
-            version=None, tags=None):
-        Emitter.__init__(self, stream, canonical=canonical,
-                indent=indent, width=width,
-                allow_unicode=allow_unicode, line_break=line_break)
-        Serializer.__init__(self, encoding=encoding,
-                explicit_start=explicit_start, explicit_end=explicit_end,
-                version=version, tags=tags)
-        Representer.__init__(self, default_style=default_style,
-                default_flow_style=default_flow_style)
-        Resolver.__init__(self)
-
-class SafeDumper(Emitter, Serializer, SafeRepresenter, Resolver):
-
-    def __init__(self, stream,
-            default_style=None, default_flow_style=None,
-            canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None,
-            encoding=None, explicit_start=None, explicit_end=None,
-            version=None, tags=None):
-        Emitter.__init__(self, stream, canonical=canonical,
-                indent=indent, width=width,
-                allow_unicode=allow_unicode, line_break=line_break)
-        Serializer.__init__(self, encoding=encoding,
-                explicit_start=explicit_start, explicit_end=explicit_end,
-                version=version, tags=tags)
-        SafeRepresenter.__init__(self, default_style=default_style,
-                default_flow_style=default_flow_style)
-        Resolver.__init__(self)
-
-class Dumper(Emitter, Serializer, Representer, Resolver):
-
-    def __init__(self, stream,
-            default_style=None, default_flow_style=None,
-            canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None,
-            encoding=None, explicit_start=None, explicit_end=None,
-            version=None, tags=None):
-        Emitter.__init__(self, stream, canonical=canonical,
-                indent=indent, width=width,
-                allow_unicode=allow_unicode, line_break=line_break)
-        Serializer.__init__(self, encoding=encoding,
-                explicit_start=explicit_start, explicit_end=explicit_end,
-                version=version, tags=tags)
-        Representer.__init__(self, default_style=default_style,
-                default_flow_style=default_flow_style)
-        Resolver.__init__(self)
-
diff --git a/tablib/packages/yaml/emitter.py b/tablib/packages/yaml/emitter.py
deleted file mode 100644
index 4cb2c8a..0000000
--- a/tablib/packages/yaml/emitter.py
+++ /dev/null
@@ -1,1135 +0,0 @@
-
-# Emitter expects events obeying the following grammar:
-# stream ::= STREAM-START document* STREAM-END
-# document ::= DOCUMENT-START node DOCUMENT-END
-# node ::= SCALAR | sequence | mapping
-# sequence ::= SEQUENCE-START node* SEQUENCE-END
-# mapping ::= MAPPING-START (node node)* MAPPING-END
-
-__all__ = ['Emitter', 'EmitterError']
-
-from error import YAMLError
-from events import *
-
-class EmitterError(YAMLError):
-    pass
-
-class ScalarAnalysis(object):
-    def __init__(self, scalar, empty, multiline,
-            allow_flow_plain, allow_block_plain,
-            allow_single_quoted, allow_double_quoted,
-            allow_block):
-        self.scalar = scalar
-        self.empty = empty
-        self.multiline = multiline
-        self.allow_flow_plain = allow_flow_plain
-        self.allow_block_plain = allow_block_plain
-        self.allow_single_quoted = allow_single_quoted
-        self.allow_double_quoted = allow_double_quoted
-        self.allow_block = allow_block
-
-class Emitter(object):
-
-    DEFAULT_TAG_PREFIXES = {
-        u'!' : u'!',
-        u'tag:yaml.org,2002:' : u'!!',
-    }
-
-    def __init__(self, stream, canonical=None, indent=None, width=None,
-            allow_unicode=None, line_break=None):
-
-        # The stream should have the methods `write` and possibly `flush`.
-        self.stream = stream
-
-        # Encoding can be overriden by STREAM-START.
-        self.encoding = None
-
-        # Emitter is a state machine with a stack of states to handle nested
-        # structures.
-        self.states = []
-        self.state = self.expect_stream_start
-
-        # Current event and the event queue.
-        self.events = []
-        self.event = None
-
-        # The current indentation level and the stack of previous indents.
-        self.indents = []
-        self.indent = None
-
-        # Flow level.
-        self.flow_level = 0
-
-        # Contexts.
-        self.root_context = False
-        self.sequence_context = False
-        self.mapping_context = False
-        self.simple_key_context = False
-
-        # Characteristics of the last emitted character:
-        #  - current position.
-        #  - is it a whitespace?
-        #  - is it an indention character
-        #    (indentation space, '-', '?', or ':')?
-        self.line = 0
-        self.column = 0
-        self.whitespace = True
-        self.indention = True
-
-        # Whether the document requires an explicit document indicator
-        self.open_ended = False
-
-        # Formatting details.
-        self.canonical = canonical
-        self.allow_unicode = allow_unicode
-        self.best_indent = 2
-        if indent and 1 < indent < 10:
-            self.best_indent = indent
-        self.best_width = 80
-        if width and width > self.best_indent*2:
-            self.best_width = width
-        self.best_line_break = u'\n'
-        if line_break in [u'\r', u'\n', u'\r\n']:
-            self.best_line_break = line_break
-
-        # Tag prefixes.
-        self.tag_prefixes = None
-
-        # Prepared anchor and tag.
-        self.prepared_anchor = None
-        self.prepared_tag = None
-
-        # Scalar analysis and style.
-        self.analysis = None
-        self.style = None
-
-    def emit(self, event):
-        self.events.append(event)
-        while not self.need_more_events():
-            self.event = self.events.pop(0)
-            self.state()
-            self.event = None
-
-    # In some cases, we wait for a few next events before emitting.
-
-    def need_more_events(self):
-        if not self.events:
-            return True
-        event = self.events[0]
-        if isinstance(event, DocumentStartEvent):
-            return self.need_events(1)
-        elif isinstance(event, SequenceStartEvent):
-            return self.need_events(2)
-        elif isinstance(event, MappingStartEvent):
-            return self.need_events(3)
-        else:
-            return False
-
-    def need_events(self, count):
-        level = 0
-        for event in self.events[1:]:
-            if isinstance(event, (DocumentStartEvent, CollectionStartEvent)):
-                level += 1
-            elif isinstance(event, (DocumentEndEvent, CollectionEndEvent)):
-                level -= 1
-            elif isinstance(event, StreamEndEvent):
-                level = -1
-            if level < 0:
-                return False
-        return (len(self.events) < count+1)
-
-    def increase_indent(self, flow=False, indentless=False):
-        self.indents.append(self.indent)
-        if self.indent is None:
-            if flow:
-                self.indent = self.best_indent
-            else:
-                self.indent = 0
-        elif not indentless:
-            self.indent += self.best_indent
-
-    # States.
-
-    # Stream handlers.
-
-    def expect_stream_start(self):
-        if isinstance(self.event, StreamStartEvent):
-            if self.event.encoding and not getattr(self.stream, 'encoding', None):
-                self.encoding = self.event.encoding
-            self.write_stream_start()
-            self.state = self.expect_first_document_start
-        else:
-            raise EmitterError("expected StreamStartEvent, but got %s"
-                    % self.event)
-
-    def expect_nothing(self):
-        raise EmitterError("expected nothing, but got %s" % self.event)
-
-    # Document handlers.
-
-    def expect_first_document_start(self):
-        return self.expect_document_start(first=True)
-
-    def expect_document_start(self, first=False):
-        if isinstance(self.event, DocumentStartEvent):
-            if (self.event.version or self.event.tags) and self.open_ended:
-                self.write_indicator(u'...', True)
-                self.write_indent()
-            if self.event.version:
-                version_text = self.prepare_version(self.event.version)
-                self.write_version_directive(version_text)
-            self.tag_prefixes = self.DEFAULT_TAG_PREFIXES.copy()
-            if self.event.tags:
-                handles = self.event.tags.keys()
-                handles.sort()
-                for handle in handles:
-                    prefix = self.event.tags[handle]
-                    self.tag_prefixes[prefix] = handle
-                    handle_text = self.prepare_tag_handle(handle)
-                    prefix_text = self.prepare_tag_prefix(prefix)
-                    self.write_tag_directive(handle_text, prefix_text)
-            implicit = (first and not self.event.explicit and not self.canonical
-                    and not self.event.version and not self.event.tags
-                    and not self.check_empty_document())
-            if not implicit:
-                self.write_indent()
-                self.write_indicator(u'---', True)
-                if self.canonical:
-                    self.write_indent()
-            self.state = self.expect_document_root
-        elif isinstance(self.event, StreamEndEvent):
-            if self.open_ended:
-                self.write_indicator(u'...', True)
-                self.write_indent()
-            self.write_stream_end()
-            self.state = self.expect_nothing
-        else:
-            raise EmitterError("expected DocumentStartEvent, but got %s"
-                    % self.event)
-
-    def expect_document_end(self):
-        if isinstance(self.event, DocumentEndEvent):
-            self.write_indent()
-            if self.event.explicit:
-                self.write_indicator(u'...', True)
-                self.write_indent()
-            self.flush_stream()
-            self.state = self.expect_document_start
-        else:
-            raise EmitterError("expected DocumentEndEvent, but got %s"
-                    % self.event)
-
-    def expect_document_root(self):
-        self.states.append(self.expect_document_end)
-        self.expect_node(root=True)
-
-    # Node handlers.
-
-    def expect_node(self, root=False, sequence=False, mapping=False,
-            simple_key=False):
-        self.root_context = root
-        self.sequence_context = sequence
-        self.mapping_context = mapping
-        self.simple_key_context = simple_key
-        if isinstance(self.event, AliasEvent):
-            self.expect_alias()
-        elif isinstance(self.event, (ScalarEvent, CollectionStartEvent)):
-            self.process_anchor(u'&')
-            self.process_tag()
-            if isinstance(self.event, ScalarEvent):
-                self.expect_scalar()
-            elif isinstance(self.event, SequenceStartEvent):
-                if self.flow_level or self.canonical or self.event.flow_style   \
-                        or self.check_empty_sequence():
-                    self.expect_flow_sequence()
-                else:
-                    self.expect_block_sequence()
-            elif isinstance(self.event, MappingStartEvent):
-                if self.flow_level or self.canonical or self.event.flow_style   \
-                        or self.check_empty_mapping():
-                    self.expect_flow_mapping()
-                else:
-                    self.expect_block_mapping()
-        else:
-            raise EmitterError("expected NodeEvent, but got %s" % self.event)
-
-    def expect_alias(self):
-        if self.event.anchor is None:
-            raise EmitterError("anchor is not specified for alias")
-        self.process_anchor(u'*')
-        self.state = self.states.pop()
-
-    def expect_scalar(self):
-        self.increase_indent(flow=True)
-        self.process_scalar()
-        self.indent = self.indents.pop()
-        self.state = self.states.pop()
-
-    # Flow sequence handlers.
-
-    def expect_flow_sequence(self):
-        self.write_indicator(u'[', True, whitespace=True)
-        self.flow_level += 1
-        self.increase_indent(flow=True)
-        self.state = self.expect_first_flow_sequence_item
-
-    def expect_first_flow_sequence_item(self):
-        if isinstance(self.event, SequenceEndEvent):
-            self.indent = self.indents.pop()
-            self.flow_level -= 1
-            self.write_indicator(u']', False)
-            self.state = self.states.pop()
-        else:
-            if self.canonical or self.column > self.best_width:
-                self.write_indent()
-            self.states.append(self.expect_flow_sequence_item)
-            self.expect_node(sequence=True)
-
-    def expect_flow_sequence_item(self):
-        if isinstance(self.event, SequenceEndEvent):
-            self.indent = self.indents.pop()
-            self.flow_level -= 1
-            if self.canonical:
-                self.write_indicator(u',', False)
-                self.write_indent()
-            self.write_indicator(u']', False)
-            self.state = self.states.pop()
-        else:
-            self.write_indicator(u',', False)
-            if self.canonical or self.column > self.best_width:
-                self.write_indent()
-            self.states.append(self.expect_flow_sequence_item)
-            self.expect_node(sequence=True)
-
-    # Flow mapping handlers.
-
-    def expect_flow_mapping(self):
-        self.write_indicator(u'{', True, whitespace=True)
-        self.flow_level += 1
-        self.increase_indent(flow=True)
-        self.state = self.expect_first_flow_mapping_key
-
-    def expect_first_flow_mapping_key(self):
-        if isinstance(self.event, MappingEndEvent):
-            self.indent = self.indents.pop()
-            self.flow_level -= 1
-            self.write_indicator(u'}', False)
-            self.state = self.states.pop()
-        else:
-            if self.canonical or self.column > self.best_width:
-                self.write_indent()
-            if not self.canonical and self.check_simple_key():
-                self.states.append(self.expect_flow_mapping_simple_value)
-                self.expect_node(mapping=True, simple_key=True)
-            else:
-                self.write_indicator(u'?', True)
-                self.states.append(self.expect_flow_mapping_value)
-                self.expect_node(mapping=True)
-
-    def expect_flow_mapping_key(self):
-        if isinstance(self.event, MappingEndEvent):
-            self.indent = self.indents.pop()
-            self.flow_level -= 1
-            if self.canonical:
-                self.write_indicator(u',', False)
-                self.write_indent()
-            self.write_indicator(u'}', False)
-            self.state = self.states.pop()
-        else:
-            self.write_indicator(u',', False)
-            if self.canonical or self.column > self.best_width:
-                self.write_indent()
-            if not self.canonical and self.check_simple_key():
-                self.states.append(self.expect_flow_mapping_simple_value)
-                self.expect_node(mapping=True, simple_key=True)
-            else:
-                self.write_indicator(u'?', True)
-                self.states.append(self.expect_flow_mapping_value)
-                self.expect_node(mapping=True)
-
-    def expect_flow_mapping_simple_value(self):
-        self.write_indicator(u':', False)
-        self.states.append(self.expect_flow_mapping_key)
-        self.expect_node(mapping=True)
-
-    def expect_flow_mapping_value(self):
-        if self.canonical or self.column > self.best_width:
-            self.write_indent()
-        self.write_indicator(u':', True)
-        self.states.append(self.expect_flow_mapping_key)
-        self.expect_node(mapping=True)
-
-    # Block sequence handlers.
-
-    def expect_block_sequence(self):
-        indentless = (self.mapping_context and not self.indention)
-        self.increase_indent(flow=False, indentless=indentless)
-        self.state = self.expect_first_block_sequence_item
-
-    def expect_first_block_sequence_item(self):
-        return self.expect_block_sequence_item(first=True)
-
-    def expect_block_sequence_item(self, first=False):
-        if not first and isinstance(self.event, SequenceEndEvent):
-            self.indent = self.indents.pop()
-            self.state = self.states.pop()
-        else:
-            self.write_indent()
-            self.write_indicator(u'-', True, indention=True)
-            self.states.append(self.expect_block_sequence_item)
-            self.expect_node(sequence=True)
-
-    # Block mapping handlers.
-
-    def expect_block_mapping(self):
-        self.increase_indent(flow=False)
-        self.state = self.expect_first_block_mapping_key
-
-    def expect_first_block_mapping_key(self):
-        return self.expect_block_mapping_key(first=True)
-
-    def expect_block_mapping_key(self, first=False):
-        if not first and isinstance(self.event, MappingEndEvent):
-            self.indent = self.indents.pop()
-            self.state = self.states.pop()
-        else:
-            self.write_indent()
-            if self.check_simple_key():
-                self.states.append(self.expect_block_mapping_simple_value)
-                self.expect_node(mapping=True, simple_key=True)
-            else:
-                self.write_indicator(u'?', True, indention=True)
-                self.states.append(self.expect_block_mapping_value)
-                self.expect_node(mapping=True)
-
-    def expect_block_mapping_simple_value(self):
-        self.write_indicator(u':', False)
-        self.states.append(self.expect_block_mapping_key)
-        self.expect_node(mapping=True)
-
-    def expect_block_mapping_value(self):
-        self.write_indent()
-        self.write_indicator(u':', True, indention=True)
-        self.states.append(self.expect_block_mapping_key)
-        self.expect_node(mapping=True)
-
-    # Checkers.
-
-    def check_empty_sequence(self):
-        return (isinstance(self.event, SequenceStartEvent) and self.events
-                and isinstance(self.events[0], SequenceEndEvent))
-
-    def check_empty_mapping(self):
-        return (isinstance(self.event, MappingStartEvent) and self.events
-                and isinstance(self.events[0], MappingEndEvent))
-
-    def check_empty_document(self):
-        if not isinstance(self.event, DocumentStartEvent) or not self.events:
-            return False
-        event = self.events[0]
-        return (isinstance(event, ScalarEvent) and event.anchor is None
-                and event.tag is None and event.implicit and event.value == u'')
-
-    def check_simple_key(self):
-        length = 0
-        if isinstance(self.event, NodeEvent) and self.event.anchor is not None:
-            if self.prepared_anchor is None:
-                self.prepared_anchor = self.prepare_anchor(self.event.anchor)
-            length += len(self.prepared_anchor)
-        if isinstance(self.event, (ScalarEvent, CollectionStartEvent))  \
-                and self.event.tag is not None:
-            if self.prepared_tag is None:
-                self.prepared_tag = self.prepare_tag(self.event.tag)
-            length += len(self.prepared_tag)
-        if isinstance(self.event, ScalarEvent):
-            if self.analysis is None:
-                self.analysis = self.analyze_scalar(self.event.value)
-            length += len(self.analysis.scalar)
-        return (length < 128 and (isinstance(self.event, AliasEvent)
-            or (isinstance(self.event, ScalarEvent)
-                    and not self.analysis.empty and not self.analysis.multiline)
-            or self.check_empty_sequence() or self.check_empty_mapping()))
-
-    # Anchor, Tag, and Scalar processors.
-
-    def process_anchor(self, indicator):
-        if self.event.anchor is None:
-            self.prepared_anchor = None
-            return
-        if self.prepared_anchor is None:
-            self.prepared_anchor = self.prepare_anchor(self.event.anchor)
-        if self.prepared_anchor:
-            self.write_indicator(indicator+self.prepared_anchor, True)
-        self.prepared_anchor = None
-
-    def process_tag(self):
-        tag = self.event.tag
-        if isinstance(self.event, ScalarEvent):
-            if self.style is None:
-                self.style = self.choose_scalar_style()
-            if ((not self.canonical or tag is None) and
-                ((self.style == '' and self.event.implicit[0])
-                        or (self.style != '' and self.event.implicit[1]))):
-                self.prepared_tag = None
-                return
-            if self.event.implicit[0] and tag is None:
-                tag = u'!'
-                self.prepared_tag = None
-        else:
-            if (not self.canonical or tag is None) and self.event.implicit:
-                self.prepared_tag = None
-                return
-        if tag is None:
-            raise EmitterError("tag is not specified")
-        if self.prepared_tag is None:
-            self.prepared_tag = self.prepare_tag(tag)
-        if self.prepared_tag:
-            self.write_indicator(self.prepared_tag, True)
-        self.prepared_tag = None
-
-    def choose_scalar_style(self):
-        if self.analysis is None:
-            self.analysis = self.analyze_scalar(self.event.value)
-        if self.event.style == '"' or self.canonical:
-            return '"'
-        if not self.event.style and self.event.implicit[0]:
-            if (not (self.simple_key_context and
-                    (self.analysis.empty or self.analysis.multiline))
-                and (self.flow_level and self.analysis.allow_flow_plain
-                    or (not self.flow_level and self.analysis.allow_block_plain))):
-                return ''
-        if self.event.style and self.event.style in '|>':
-            if (not self.flow_level and not self.simple_key_context
-                    and self.analysis.allow_block):
-                return self.event.style
-        if not self.event.style or self.event.style == '\'':
-            if (self.analysis.allow_single_quoted and
-                    not (self.simple_key_context and self.analysis.multiline)):
-                return '\''
-        return '"'
-
-    def process_scalar(self):
-        if self.analysis is None:
-            self.analysis = self.analyze_scalar(self.event.value)
-        if self.style is None:
-            self.style = self.choose_scalar_style()
-        split = (not self.simple_key_context)
-        #if self.analysis.multiline and split    \
-        #        and (not self.style or self.style in '\'\"'):
-        #    self.write_indent()
-        if self.style == '"':
-            self.write_double_quoted(self.analysis.scalar, split)
-        elif self.style == '\'':
-            self.write_single_quoted(self.analysis.scalar, split)
-        elif self.style == '>':
-            self.write_folded(self.analysis.scalar)
-        elif self.style == '|':
-            self.write_literal(self.analysis.scalar)
-        else:
-            self.write_plain(self.analysis.scalar, split)
-        self.analysis = None
-        self.style = None
-
-    # Analyzers.
-
-    def prepare_version(self, version):
-        major, minor = version
-        if major != 1:
-            raise EmitterError("unsupported YAML version: %d.%d" % (major, minor))
-        return u'%d.%d' % (major, minor)
-
-    def prepare_tag_handle(self, handle):
-        if not handle:
-            raise EmitterError("tag handle must not be empty")
-        if handle[0] != u'!' or handle[-1] != u'!':
-            raise EmitterError("tag handle must start and end with '!': %r"
-                    % (handle.encode('utf-8')))
-        for ch in handle[1:-1]:
-            if not (u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'  \
-                    or ch in u'-_'):
-                raise EmitterError("invalid character %r in the tag handle: %r"
-                        % (ch.encode('utf-8'), handle.encode('utf-8')))
-        return handle
-
-    def prepare_tag_prefix(self, prefix):
-        if not prefix:
-            raise EmitterError("tag prefix must not be empty")
-        chunks = []
-        start = end = 0
-        if prefix[0] == u'!':
-            end = 1
-        while end < len(prefix):
-            ch = prefix[end]
-            if u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'   \
-                    or ch in u'-;/?!:@&=+$,_.~*\'()[]':
-                end += 1
-            else:
-                if start < end:
-                    chunks.append(prefix[start:end])
-                start = end = end+1
-                data = ch.encode('utf-8')
-                for ch in data:
-                    chunks.append(u'%%%02X' % ord(ch))
-        if start < end:
-            chunks.append(prefix[start:end])
-        return u''.join(chunks)
-
-    def prepare_tag(self, tag):
-        if not tag:
-            raise EmitterError("tag must not be empty")
-        if tag == u'!':
-            return tag
-        handle = None
-        suffix = tag
-        prefixes = self.tag_prefixes.keys()
-        prefixes.sort()
-        for prefix in prefixes:
-            if tag.startswith(prefix)   \
-                    and (prefix == u'!' or len(prefix) < len(tag)):
-                handle = self.tag_prefixes[prefix]
-                suffix = tag[len(prefix):]
-        chunks = []
-        start = end = 0
-        while end < len(suffix):
-            ch = suffix[end]
-            if u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'   \
-                    or ch in u'-;/?:@&=+$,_.~*\'()[]'   \
-                    or (ch == u'!' and handle != u'!'):
-                end += 1
-            else:
-                if start < end:
-                    chunks.append(suffix[start:end])
-                start = end = end+1
-                data = ch.encode('utf-8')
-                for ch in data:
-                    chunks.append(u'%%%02X' % ord(ch))
-        if start < end:
-            chunks.append(suffix[start:end])
-        suffix_text = u''.join(chunks)
-        if handle:
-            return u'%s%s' % (handle, suffix_text)
-        else:
-            return u'!<%s>' % suffix_text
-
-    def prepare_anchor(self, anchor):
-        if not anchor:
-            raise EmitterError("anchor must not be empty")
-        for ch in anchor:
-            if not (u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'  \
-                    or ch in u'-_'):
-                raise EmitterError("invalid character %r in the anchor: %r"
-                        % (ch.encode('utf-8'), anchor.encode('utf-8')))
-        return anchor
-
-    def analyze_scalar(self, scalar):
-
-        # Empty scalar is a special case.
-        if not scalar:
-            return ScalarAnalysis(scalar=scalar, empty=True, multiline=False,
-                    allow_flow_plain=False, allow_block_plain=True,
-                    allow_single_quoted=True, allow_double_quoted=True,
-                    allow_block=False)
-
-        # Indicators and special characters.
-        block_indicators = False
-        flow_indicators = False
-        line_breaks = False
-        special_characters = False
-
-        # Important whitespace combinations.
-        leading_space = False
-        leading_break = False
-        trailing_space = False
-        trailing_break = False
-        break_space = False
-        space_break = False
-
-        # Check document indicators.
-        if scalar.startswith(u'---') or scalar.startswith(u'...'):
-            block_indicators = True
-            flow_indicators = True
-
-        # First character or preceded by a whitespace.
-        preceeded_by_whitespace = True
-
-        # Last character or followed by a whitespace.
-        followed_by_whitespace = (len(scalar) == 1 or
-                scalar[1] in u'\0 \t\r\n\x85\u2028\u2029')
-
-        # The previous character is a space.
-        previous_space = False
-
-        # The previous character is a break.
-        previous_break = False
-
-        index = 0
-        while index < len(scalar):
-            ch = scalar[index]
-
-            # Check for indicators.
-            if index == 0:
-                # Leading indicators are special characters.
-                if ch in u'#,[]{}&*!|>\'\"%@`': 
-                    flow_indicators = True
-                    block_indicators = True
-                if ch in u'?:':
-                    flow_indicators = True
-                    if followed_by_whitespace:
-                        block_indicators = True
-                if ch == u'-' and followed_by_whitespace:
-                    flow_indicators = True
-                    block_indicators = True
-            else:
-                # Some indicators cannot appear within a scalar as well.
-                if ch in u',?[]{}':
-                    flow_indicators = True
-                if ch == u':':
-                    flow_indicators = True
-                    if followed_by_whitespace:
-                        block_indicators = True
-                if ch == u'#' and preceeded_by_whitespace:
-                    flow_indicators = True
-                    block_indicators = True
-
-            # Check for line breaks, special, and unicode characters.
-            if ch in u'\n\x85\u2028\u2029':
-                line_breaks = True
-            if not (ch == u'\n' or u'\x20' <= ch <= u'\x7E'):
-                if (ch == u'\x85' or u'\xA0' <= ch <= u'\uD7FF'
-                        or u'\uE000' <= ch <= u'\uFFFD') and ch != u'\uFEFF':
-                    unicode_characters = True
-                    if not self.allow_unicode:
-                        special_characters = True
-                else:
-                    special_characters = True
-
-            # Detect important whitespace combinations.
-            if ch == u' ':
-                if index == 0:
-                    leading_space = True
-                if index == len(scalar)-1:
-                    trailing_space = True
-                if previous_break:
-                    break_space = True
-                previous_space = True
-                previous_break = False
-            elif ch in u'\n\x85\u2028\u2029':
-                if index == 0:
-                    leading_break = True
-                if index == len(scalar)-1:
-                    trailing_break = True
-                if previous_space:
-                    space_break = True
-                previous_space = False
-                previous_break = True
-            else:
-                previous_space = False
-                previous_break = False
-
-            # Prepare for the next character.
-            index += 1
-            preceeded_by_whitespace = (ch in u'\0 \t\r\n\x85\u2028\u2029')
-            followed_by_whitespace = (index+1 >= len(scalar) or
-                    scalar[index+1] in u'\0 \t\r\n\x85\u2028\u2029')
-
-        # Let's decide what styles are allowed.
-        allow_flow_plain = True
-        allow_block_plain = True
-        allow_single_quoted = True
-        allow_double_quoted = True
-        allow_block = True
-
-        # Leading and trailing whitespaces are bad for plain scalars.
-        if (leading_space or leading_break
-                or trailing_space or trailing_break):
-            allow_flow_plain = allow_block_plain = False
-
-        # We do not permit trailing spaces for block scalars.
-        if trailing_space:
-            allow_block = False
-
-        # Spaces at the beginning of a new line are only acceptable for block
-        # scalars.
-        if break_space:
-            allow_flow_plain = allow_block_plain = allow_single_quoted = False
-
-        # Spaces followed by breaks, as well as special character are only
-        # allowed for double quoted scalars.
-        if space_break or special_characters:
-            allow_flow_plain = allow_block_plain =  \
-            allow_single_quoted = allow_block = False
-
-        # Although the plain scalar writer supports breaks, we never emit
-        # multiline plain scalars.
-        if line_breaks:
-            allow_flow_plain = allow_block_plain = False
-
-        # Flow indicators are forbidden for flow plain scalars.
-        if flow_indicators:
-            allow_flow_plain = False
-
-        # Block indicators are forbidden for block plain scalars.
-        if block_indicators:
-            allow_block_plain = False
-
-        return ScalarAnalysis(scalar=scalar,
-                empty=False, multiline=line_breaks,
-                allow_flow_plain=allow_flow_plain,
-                allow_block_plain=allow_block_plain,
-                allow_single_quoted=allow_single_quoted,
-                allow_double_quoted=allow_double_quoted,
-                allow_block=allow_block)
-
-    # Writers.
-
-    def flush_stream(self):
-        if hasattr(self.stream, 'flush'):
-            self.stream.flush()
-
-    def write_stream_start(self):
-        # Write BOM if needed.
-        if self.encoding and self.encoding.startswith('utf-16'):
-            self.stream.write(u'\uFEFF'.encode(self.encoding))
-
-    def write_stream_end(self):
-        self.flush_stream()
-
-    def write_indicator(self, indicator, need_whitespace,
-            whitespace=False, indention=False):
-        if self.whitespace or not need_whitespace:
-            data = indicator
-        else:
-            data = u' '+indicator
-        self.whitespace = whitespace
-        self.indention = self.indention and indention
-        self.column += len(data)
-        self.open_ended = False
-        if self.encoding:
-            data = data.encode(self.encoding)
-        self.stream.write(data)
-
-    def write_indent(self):
-        indent = self.indent or 0
-        if not self.indention or self.column > indent   \
-                or (self.column == indent and not self.whitespace):
-            self.write_line_break()
-        if self.column < indent:
-            self.whitespace = True
-            data = u' '*(indent-self.column)
-            self.column = indent
-            if self.encoding:
-                data = data.encode(self.encoding)
-            self.stream.write(data)
-
-    def write_line_break(self, data=None):
-        if data is None:
-            data = self.best_line_break
-        self.whitespace = True
-        self.indention = True
-        self.line += 1
-        self.column = 0
-        if self.encoding:
-            data = data.encode(self.encoding)
-        self.stream.write(data)
-
-    def write_version_directive(self, version_text):
-        data = u'%%YAML %s' % version_text
-        if self.encoding:
-            data = data.encode(self.encoding)
-        self.stream.write(data)
-        self.write_line_break()
-
-    def write_tag_directive(self, handle_text, prefix_text):
-        data = u'%%TAG %s %s' % (handle_text, prefix_text)
-        if self.encoding:
-            data = data.encode(self.encoding)
-        self.stream.write(data)
-        self.write_line_break()
-
-    # Scalar streams.
-
-    def write_single_quoted(self, text, split=True):
-        self.write_indicator(u'\'', True)
-        spaces = False
-        breaks = False
-        start = end = 0
-        while end <= len(text):
-            ch = None
-            if end < len(text):
-                ch = text[end]
-            if spaces:
-                if ch is None or ch != u' ':
-                    if start+1 == end and self.column > self.best_width and split   \
-                            and start != 0 and end != len(text):
-                        self.write_indent()
-                    else:
-                        data = text[start:end]
-                        self.column += len(data)
-                        if self.encoding:
-                            data = data.encode(self.encoding)
-                        self.stream.write(data)
-                    start = end
-            elif breaks:
-                if ch is None or ch not in u'\n\x85\u2028\u2029':
-                    if text[start] == u'\n':
-                        self.write_line_break()
-                    for br in text[start:end]:
-                        if br == u'\n':
-                            self.write_line_break()
-                        else:
-                            self.write_line_break(br)
-                    self.write_indent()
-                    start = end
-            else:
-                if ch is None or ch in u' \n\x85\u2028\u2029' or ch == u'\'':
-                    if start < end:
-                        data = text[start:end]
-                        self.column += len(data)
-                        if self.encoding:
-                            data = data.encode(self.encoding)
-                        self.stream.write(data)
-                        start = end
-            if ch == u'\'':
-                data = u'\'\''
-                self.column += 2
-                if self.encoding:
-                    data = data.encode(self.encoding)
-                self.stream.write(data)
-                start = end + 1
-            if ch is not None:
-                spaces = (ch == u' ')
-                breaks = (ch in u'\n\x85\u2028\u2029')
-            end += 1
-        self.write_indicator(u'\'', False)
-
-    ESCAPE_REPLACEMENTS = {
-        u'\0':      u'0',
-        u'\x07':    u'a',
-        u'\x08':    u'b',
-        u'\x09':    u't',
-        u'\x0A':    u'n',
-        u'\x0B':    u'v',
-        u'\x0C':    u'f',
-        u'\x0D':    u'r',
-        u'\x1B':    u'e',
-        u'\"':      u'\"',
-        u'\\':      u'\\',
-        u'\x85':    u'N',
-        u'\xA0':    u'_',
-        u'\u2028':  u'L',
-        u'\u2029':  u'P',
-    }
-
-    def write_double_quoted(self, text, split=True):
-        self.write_indicator(u'"', True)
-        start = end = 0
-        while end <= len(text):
-            ch = None
-            if end < len(text):
-                ch = text[end]
-            if ch is None or ch in u'"\\\x85\u2028\u2029\uFEFF' \
-                    or not (u'\x20' <= ch <= u'\x7E'
-                        or (self.allow_unicode
-                            and (u'\xA0' <= ch <= u'\uD7FF'
-                                or u'\uE000' <= ch <= u'\uFFFD'))):
-                if start < end:
-                    data = text[start:end]
-                    self.column += len(data)
-                    if self.encoding:
-                        data = data.encode(self.encoding)
-                    self.stream.write(data)
-                    start = end
-                if ch is not None:
-                    if ch in self.ESCAPE_REPLACEMENTS:
-                        data = u'\\'+self.ESCAPE_REPLACEMENTS[ch]
-                    elif ch <= u'\xFF':
-                        data = u'\\x%02X' % ord(ch)
-                    elif ch <= u'\uFFFF':
-                        data = u'\\u%04X' % ord(ch)
-                    else:
-                        data = u'\\U%08X' % ord(ch)
-                    self.column += len(data)
-                    if self.encoding:
-                        data = data.encode(self.encoding)
-                    self.stream.write(data)
-                    start = end+1
-            if 0 < end < len(text)-1 and (ch == u' ' or start >= end)   \
-                    and self.column+(end-start) > self.best_width and split:
-                data = text[start:end]+u'\\'
-                if start < end:
-                    start = end
-                self.column += len(data)
-                if self.encoding:
-                    data = data.encode(self.encoding)
-                self.stream.write(data)
-                self.write_indent()
-                self.whitespace = False
-                self.indention = False
-                if text[start] == u' ':
-                    data = u'\\'
-                    self.column += len(data)
-                    if self.encoding:
-                        data = data.encode(self.encoding)
-                    self.stream.write(data)
-            end += 1
-        self.write_indicator(u'"', False)
-
-    def determine_block_hints(self, text):
-        hints = u''
-        if text:
-            if text[0] in u' \n\x85\u2028\u2029':
-                hints += unicode(self.best_indent)
-            if text[-1] not in u'\n\x85\u2028\u2029':
-                hints += u'-'
-            elif len(text) == 1 or text[-2] in u'\n\x85\u2028\u2029':
-                hints += u'+'
-        return hints
-
-    def write_folded(self, text):
-        hints = self.determine_block_hints(text)
-        self.write_indicator(u'>'+hints, True)
-        if hints[-1:] == u'+':
-            self.open_ended = True
-        self.write_line_break()
-        leading_space = True
-        spaces = False
-        breaks = True
-        start = end = 0
-        while end <= len(text):
-            ch = None
-            if end < len(text):
-                ch = text[end]
-            if breaks:
-                if ch is None or ch not in u'\n\x85\u2028\u2029':
-                    if not leading_space and ch is not None and ch != u' '  \
-                            and text[start] == u'\n':
-                        self.write_line_break()
-                    leading_space = (ch == u' ')
-                    for br in text[start:end]:
-                        if br == u'\n':
-                            self.write_line_break()
-                        else:
-                            self.write_line_break(br)
-                    if ch is not None:
-                        self.write_indent()
-                    start = end
-            elif spaces:
-                if ch != u' ':
-                    if start+1 == end and self.column > self.best_width:
-                        self.write_indent()
-                    else:
-                        data = text[start:end]
-                        self.column += len(data)
-                        if self.encoding:
-                            data = data.encode(self.encoding)
-                        self.stream.write(data)
-                    start = end
-            else:
-                if ch is None or ch in u' \n\x85\u2028\u2029':
-                    data = text[start:end]
-                    self.column += len(data)
-                    if self.encoding:
-                        data = data.encode(self.encoding)
-                    self.stream.write(data)
-                    if ch is None:
-                        self.write_line_break()
-                    start = end
-            if ch is not None:
-                breaks = (ch in u'\n\x85\u2028\u2029')
-                spaces = (ch == u' ')
-            end += 1
-
-    def write_literal(self, text):
-        hints = self.determine_block_hints(text)
-        self.write_indicator(u'|'+hints, True)
-        if hints[-1:] == u'+':
-            self.open_ended = True
-        self.write_line_break()
-        breaks = True
-        start = end = 0
-        while end <= len(text):
-            ch = None
-            if end < len(text):
-                ch = text[end]
-            if breaks:
-                if ch is None or ch not in u'\n\x85\u2028\u2029':
-                    for br in text[start:end]:
-                        if br == u'\n':
-                            self.write_line_break()
-                        else:
-                            self.write_line_break(br)
-                    if ch is not None:
-                        self.write_indent()
-                    start = end
-            else:
-                if ch is None or ch in u'\n\x85\u2028\u2029':
-                    data = text[start:end]
-                    if self.encoding:
-                        data = data.encode(self.encoding)
-                    self.stream.write(data)
-                    if ch is None:
-                        self.write_line_break()
-                    start = end
-            if ch is not None:
-                breaks = (ch in u'\n\x85\u2028\u2029')
-            end += 1
-
-    def write_plain(self, text, split=True):
-        if self.root_context:
-            self.open_ended = True
-        if not text:
-            return
-        if not self.whitespace:
-            data = u' '
-            self.column += len(data)
-            if self.encoding:
-                data = data.encode(self.encoding)
-            self.stream.write(data)
-        self.whitespace = False
-        self.indention = False
-        spaces = False
-        breaks = False
-        start = end = 0
-        while end <= len(text):
-            ch = None
-            if end < len(text):
-                ch = text[end]
-            if spaces:
-                if ch != u' ':
-                    if start+1 == end and self.column > self.best_width and split:
-                        self.write_indent()
-                        self.whitespace = False
-                        self.indention = False
-                    else:
-                        data = text[start:end]
-                        self.column += len(data)
-                        if self.encoding:
-                            data = data.encode(self.encoding)
-                        self.stream.write(data)
-                    start = end
-            elif breaks:
-                if ch not in u'\n\x85\u2028\u2029':
-                    if text[start] == u'\n':
-                        self.write_line_break()
-                    for br in text[start:end]:
-                        if br == u'\n':
-                            self.write_line_break()
-                        else:
-                            self.write_line_break(br)
-                    self.write_indent()
-                    self.whitespace = False
-                    self.indention = False
-                    start = end
-            else:
-                if ch is None or ch in u' \n\x85\u2028\u2029':
-                    data = text[start:end]
-                    self.column += len(data)
-                    if self.encoding:
-                        data = data.encode(self.encoding)
-                    self.stream.write(data)
-                    start = end
-            if ch is not None:
-                spaces = (ch == u' ')
-                breaks = (ch in u'\n\x85\u2028\u2029')
-            end += 1
-
diff --git a/tablib/packages/yaml/error.py b/tablib/packages/yaml/error.py
deleted file mode 100644
index 577686d..0000000
--- a/tablib/packages/yaml/error.py
+++ /dev/null
@@ -1,75 +0,0 @@
-
-__all__ = ['Mark', 'YAMLError', 'MarkedYAMLError']
-
-class Mark(object):
-
-    def __init__(self, name, index, line, column, buffer, pointer):
-        self.name = name
-        self.index = index
-        self.line = line
-        self.column = column
-        self.buffer = buffer
-        self.pointer = pointer
-
-    def get_snippet(self, indent=4, max_length=75):
-        if self.buffer is None:
-            return None
-        head = ''
-        start = self.pointer
-        while start > 0 and self.buffer[start-1] not in u'\0\r\n\x85\u2028\u2029':
-            start -= 1
-            if self.pointer-start > max_length/2-1:
-                head = ' ... '
-                start += 5
-                break
-        tail = ''
-        end = self.pointer
-        while end < len(self.buffer) and self.buffer[end] not in u'\0\r\n\x85\u2028\u2029':
-            end += 1
-            if end-self.pointer > max_length/2-1:
-                tail = ' ... '
-                end -= 5
-                break
-        snippet = self.buffer[start:end].encode('utf-8')
-        return ' '*indent + head + snippet + tail + '\n'  \
-                + ' '*(indent+self.pointer-start+len(head)) + '^'
-
-    def __str__(self):
-        snippet = self.get_snippet()
-        where = "  in \"%s\", line %d, column %d"   \
-                % (self.name, self.line+1, self.column+1)
-        if snippet is not None:
-            where += ":\n"+snippet
-        return where
-
-class YAMLError(Exception):
-    pass
-
-class MarkedYAMLError(YAMLError):
-
-    def __init__(self, context=None, context_mark=None,
-            problem=None, problem_mark=None, note=None):
-        self.context = context
-        self.context_mark = context_mark
-        self.problem = problem
-        self.problem_mark = problem_mark
-        self.note = note
-
-    def __str__(self):
-        lines = []
-        if self.context is not None:
-            lines.append(self.context)
-        if self.context_mark is not None  \
-            and (self.problem is None or self.problem_mark is None
-                    or self.context_mark.name != self.problem_mark.name
-                    or self.context_mark.line != self.problem_mark.line
-                    or self.context_mark.column != self.problem_mark.column):
-            lines.append(str(self.context_mark))
-        if self.problem is not None:
-            lines.append(self.problem)
-        if self.problem_mark is not None:
-            lines.append(str(self.problem_mark))
-        if self.note is not None:
-            lines.append(self.note)
-        return '\n'.join(lines)
-
diff --git a/tablib/packages/yaml/events.py b/tablib/packages/yaml/events.py
deleted file mode 100644
index f79ad38..0000000
--- a/tablib/packages/yaml/events.py
+++ /dev/null
@@ -1,86 +0,0 @@
-
-# Abstract classes.
-
-class Event(object):
-    def __init__(self, start_mark=None, end_mark=None):
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-    def __repr__(self):
-        attributes = [key for key in ['anchor', 'tag', 'implicit', 'value']
-                if hasattr(self, key)]
-        arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
-                for key in attributes])
-        return '%s(%s)' % (self.__class__.__name__, arguments)
-
-class NodeEvent(Event):
-    def __init__(self, anchor, start_mark=None, end_mark=None):
-        self.anchor = anchor
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-
-class CollectionStartEvent(NodeEvent):
-    def __init__(self, anchor, tag, implicit, start_mark=None, end_mark=None,
-            flow_style=None):
-        self.anchor = anchor
-        self.tag = tag
-        self.implicit = implicit
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.flow_style = flow_style
-
-class CollectionEndEvent(Event):
-    pass
-
-# Implementations.
-
-class StreamStartEvent(Event):
-    def __init__(self, start_mark=None, end_mark=None, encoding=None):
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.encoding = encoding
-
-class StreamEndEvent(Event):
-    pass
-
-class DocumentStartEvent(Event):
-    def __init__(self, start_mark=None, end_mark=None,
-            explicit=None, version=None, tags=None):
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.explicit = explicit
-        self.version = version
-        self.tags = tags
-
-class DocumentEndEvent(Event):
-    def __init__(self, start_mark=None, end_mark=None,
-            explicit=None):
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.explicit = explicit
-
-class AliasEvent(NodeEvent):
-    pass
-
-class ScalarEvent(NodeEvent):
-    def __init__(self, anchor, tag, implicit, value,
-            start_mark=None, end_mark=None, style=None):
-        self.anchor = anchor
-        self.tag = tag
-        self.implicit = implicit
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.style = style
-
-class SequenceStartEvent(CollectionStartEvent):
-    pass
-
-class SequenceEndEvent(CollectionEndEvent):
-    pass
-
-class MappingStartEvent(CollectionStartEvent):
-    pass
-
-class MappingEndEvent(CollectionEndEvent):
-    pass
-
diff --git a/tablib/packages/yaml/loader.py b/tablib/packages/yaml/loader.py
deleted file mode 100644
index 293ff46..0000000
--- a/tablib/packages/yaml/loader.py
+++ /dev/null
@@ -1,40 +0,0 @@
-
-__all__ = ['BaseLoader', 'SafeLoader', 'Loader']
-
-from reader import *
-from scanner import *
-from parser import *
-from composer import *
-from constructor import *
-from resolver import *
-
-class BaseLoader(Reader, Scanner, Parser, Composer, BaseConstructor, BaseResolver):
-
-    def __init__(self, stream):
-        Reader.__init__(self, stream)
-        Scanner.__init__(self)
-        Parser.__init__(self)
-        Composer.__init__(self)
-        BaseConstructor.__init__(self)
-        BaseResolver.__init__(self)
-
-class SafeLoader(Reader, Scanner, Parser, Composer, SafeConstructor, Resolver):
-
-    def __init__(self, stream):
-        Reader.__init__(self, stream)
-        Scanner.__init__(self)
-        Parser.__init__(self)
-        Composer.__init__(self)
-        SafeConstructor.__init__(self)
-        Resolver.__init__(self)
-
-class Loader(Reader, Scanner, Parser, Composer, Constructor, Resolver):
-
-    def __init__(self, stream):
-        Reader.__init__(self, stream)
-        Scanner.__init__(self)
-        Parser.__init__(self)
-        Composer.__init__(self)
-        Constructor.__init__(self)
-        Resolver.__init__(self)
-
diff --git a/tablib/packages/yaml/nodes.py b/tablib/packages/yaml/nodes.py
deleted file mode 100644
index c4f070c..0000000
--- a/tablib/packages/yaml/nodes.py
+++ /dev/null
@@ -1,49 +0,0 @@
-
-class Node(object):
-    def __init__(self, tag, value, start_mark, end_mark):
-        self.tag = tag
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-    def __repr__(self):
-        value = self.value
-        #if isinstance(value, list):
-        #    if len(value) == 0:
-        #        value = '<empty>'
-        #    elif len(value) == 1:
-        #        value = '<1 item>'
-        #    else:
-        #        value = '<%d items>' % len(value)
-        #else:
-        #    if len(value) > 75:
-        #        value = repr(value[:70]+u' ... ')
-        #    else:
-        #        value = repr(value)
-        value = repr(value)
-        return '%s(tag=%r, value=%s)' % (self.__class__.__name__, self.tag, value)
-
-class ScalarNode(Node):
-    id = 'scalar'
-    def __init__(self, tag, value,
-            start_mark=None, end_mark=None, style=None):
-        self.tag = tag
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.style = style
-
-class CollectionNode(Node):
-    def __init__(self, tag, value,
-            start_mark=None, end_mark=None, flow_style=None):
-        self.tag = tag
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.flow_style = flow_style
-
-class SequenceNode(CollectionNode):
-    id = 'sequence'
-
-class MappingNode(CollectionNode):
-    id = 'mapping'
-
diff --git a/tablib/packages/yaml/parser.py b/tablib/packages/yaml/parser.py
deleted file mode 100644
index b6a7416..0000000
--- a/tablib/packages/yaml/parser.py
+++ /dev/null
@@ -1,584 +0,0 @@
-
-# The following YAML grammar is LL(1) and is parsed by a recursive descent
-# parser.
-#
-# stream            ::= STREAM-START implicit_document? explicit_document* STREAM-END
-# implicit_document ::= block_node DOCUMENT-END*
-# explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
-# block_node_or_indentless_sequence ::=
-#                       ALIAS
-#                       | properties (block_content | indentless_block_sequence)?
-#                       | block_content
-#                       | indentless_block_sequence
-# block_node        ::= ALIAS
-#                       | properties block_content?
-#                       | block_content
-# flow_node         ::= ALIAS
-#                       | properties flow_content?
-#                       | flow_content
-# properties        ::= TAG ANCHOR? | ANCHOR TAG?
-# block_content     ::= block_collection | flow_collection | SCALAR
-# flow_content      ::= flow_collection | SCALAR
-# block_collection  ::= block_sequence | block_mapping
-# flow_collection   ::= flow_sequence | flow_mapping
-# block_sequence    ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
-# indentless_sequence   ::= (BLOCK-ENTRY block_node?)+
-# block_mapping     ::= BLOCK-MAPPING_START
-#                       ((KEY block_node_or_indentless_sequence?)?
-#                       (VALUE block_node_or_indentless_sequence?)?)*
-#                       BLOCK-END
-# flow_sequence     ::= FLOW-SEQUENCE-START
-#                       (flow_sequence_entry FLOW-ENTRY)*
-#                       flow_sequence_entry?
-#                       FLOW-SEQUENCE-END
-# flow_sequence_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
-# flow_mapping      ::= FLOW-MAPPING-START
-#                       (flow_mapping_entry FLOW-ENTRY)*
-#                       flow_mapping_entry?
-#                       FLOW-MAPPING-END
-# flow_mapping_entry    ::= flow_node | KEY flow_node? (VALUE flow_node?)?
-#
-# FIRST sets:
-#
-# stream: { STREAM-START }
-# explicit_document: { DIRECTIVE DOCUMENT-START }
-# implicit_document: FIRST(block_node)
-# block_node: { ALIAS TAG ANCHOR SCALAR BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START }
-# flow_node: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START }
-# block_content: { BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START SCALAR }
-# flow_content: { FLOW-SEQUENCE-START FLOW-MAPPING-START SCALAR }
-# block_collection: { BLOCK-SEQUENCE-START BLOCK-MAPPING-START }
-# flow_collection: { FLOW-SEQUENCE-START FLOW-MAPPING-START }
-# block_sequence: { BLOCK-SEQUENCE-START }
-# block_mapping: { BLOCK-MAPPING-START }
-# block_node_or_indentless_sequence: { ALIAS ANCHOR TAG SCALAR BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START BLOCK-ENTRY }
-# indentless_sequence: { ENTRY }
-# flow_collection: { FLOW-SEQUENCE-START FLOW-MAPPING-START }
-# flow_sequence: { FLOW-SEQUENCE-START }
-# flow_mapping: { FLOW-MAPPING-START }
-# flow_sequence_entry: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START KEY }
-# flow_mapping_entry: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START KEY }
-
-__all__ = ['Parser', 'ParserError']
-
-from error import MarkedYAMLError
-from tokens import *
-from events import *
-from scanner import *
-
-class ParserError(MarkedYAMLError):
-    pass
-
-class Parser(object):
-    # Since writing a recursive-descendant parser is a straightforward task, we
-    # do not give many comments here.
-
-    DEFAULT_TAGS = {
-        u'!':   u'!',
-        u'!!':  u'tag:yaml.org,2002:',
-    }
-
-    def __init__(self):
-        self.current_event = None
-        self.yaml_version = None
-        self.tag_handles = {}
-        self.states = []
-        self.marks = []
-        self.state = self.parse_stream_start
-
-    def check_event(self, *choices):
-        # Check the type of the next event.
-        if self.current_event is None:
-            if self.state:
-                self.current_event = self.state()
-        if self.current_event is not None:
-            if not choices:
-                return True
-            for choice in choices:
-                if isinstance(self.current_event, choice):
-                    return True
-        return False
-
-    def peek_event(self):
-        # Get the next event.
-        if self.current_event is None:
-            if self.state:
-                self.current_event = self.state()
-        return self.current_event
-
-    def get_event(self):
-        # Get the next event and proceed further.
-        if self.current_event is None:
-            if self.state:
-                self.current_event = self.state()
-        value = self.current_event
-        self.current_event = None
-        return value
-
-    # stream    ::= STREAM-START implicit_document? explicit_document* STREAM-END
-    # implicit_document ::= block_node DOCUMENT-END*
-    # explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
-
-    def parse_stream_start(self):
-
-        # Parse the stream start.
-        token = self.get_token()
-        event = StreamStartEvent(token.start_mark, token.end_mark,
-                encoding=token.encoding)
-
-        # Prepare the next state.
-        self.state = self.parse_implicit_document_start
-
-        return event
-
-    def parse_implicit_document_start(self):
-
-        # Parse an implicit document.
-        if not self.check_token(DirectiveToken, DocumentStartToken,
-                StreamEndToken):
-            self.tag_handles = self.DEFAULT_TAGS
-            token = self.peek_token()
-            start_mark = end_mark = token.start_mark
-            event = DocumentStartEvent(start_mark, end_mark,
-                    explicit=False)
-
-            # Prepare the next state.
-            self.states.append(self.parse_document_end)
-            self.state = self.parse_block_node
-
-            return event
-
-        else:
-            return self.parse_document_start()
-
-    def parse_document_start(self):
-
-        # Parse any extra document end indicators.
-        while self.check_token(DocumentEndToken):
-            self.get_token()
-
-        # Parse an explicit document.
-        if not self.check_token(StreamEndToken):
-            token = self.peek_token()
-            start_mark = token.start_mark
-            version, tags = self.process_directives()
-            if not self.check_token(DocumentStartToken):
-                raise ParserError(None, None,
-                        "expected '<document start>', but found %r"
-                        % self.peek_token().id,
-                        self.peek_token().start_mark)
-            token = self.get_token()
-            end_mark = token.end_mark
-            event = DocumentStartEvent(start_mark, end_mark,
-                    explicit=True, version=version, tags=tags)
-            self.states.append(self.parse_document_end)
-            self.state = self.parse_document_content
-        else:
-            # Parse the end of the stream.
-            token = self.get_token()
-            event = StreamEndEvent(token.start_mark, token.end_mark)
-            assert not self.states
-            assert not self.marks
-            self.state = None
-        return event
-
-    def parse_document_end(self):
-
-        # Parse the document end.
-        token = self.peek_token()
-        start_mark = end_mark = token.start_mark
-        explicit = False
-        if self.check_token(DocumentEndToken):
-            token = self.get_token()
-            end_mark = token.end_mark
-            explicit = True
-        event = DocumentEndEvent(start_mark, end_mark,
-                explicit=explicit)
-
-        # Prepare the next state.
-        self.state = self.parse_document_start
-
-        return event
-
-    def parse_document_content(self):
-        if self.check_token(DirectiveToken,
-                DocumentStartToken, DocumentEndToken, StreamEndToken):
-            event = self.process_empty_scalar(self.peek_token().start_mark)
-            self.state = self.states.pop()
-            return event
-        else:
-            return self.parse_block_node()
-
-    def process_directives(self):
-        self.yaml_version = None
-        self.tag_handles = {}
-        while self.check_token(DirectiveToken):
-            token = self.get_token()
-            if token.name == u'YAML':
-                if self.yaml_version is not None:
-                    raise ParserError(None, None,
-                            "found duplicate YAML directive", token.start_mark)
-                major, minor = token.value
-                if major != 1:
-                    raise ParserError(None, None,
-                            "found incompatible YAML document (version 1.* is required)",
-                            token.start_mark)
-                self.yaml_version = token.value
-            elif token.name == u'TAG':
-                handle, prefix = token.value
-                if handle in self.tag_handles:
-                    raise ParserError(None, None,
-                            "duplicate tag handle %r" % handle.encode('utf-8'),
-                            token.start_mark)
-                self.tag_handles[handle] = prefix
-        if self.tag_handles:
-            value = self.yaml_version, self.tag_handles.copy()
-        else:
-            value = self.yaml_version, None
-        for key in self.DEFAULT_TAGS:
-            if key not in self.tag_handles:
-                self.tag_handles[key] = self.DEFAULT_TAGS[key]
-        return value
-
-    # block_node_or_indentless_sequence ::= ALIAS
-    #               | properties (block_content | indentless_block_sequence)?
-    #               | block_content
-    #               | indentless_block_sequence
-    # block_node    ::= ALIAS
-    #                   | properties block_content?
-    #                   | block_content
-    # flow_node     ::= ALIAS
-    #                   | properties flow_content?
-    #                   | flow_content
-    # properties    ::= TAG ANCHOR? | ANCHOR TAG?
-    # block_content     ::= block_collection | flow_collection | SCALAR
-    # flow_content      ::= flow_collection | SCALAR
-    # block_collection  ::= block_sequence | block_mapping
-    # flow_collection   ::= flow_sequence | flow_mapping
-
-    def parse_block_node(self):
-        return self.parse_node(block=True)
-
-    def parse_flow_node(self):
-        return self.parse_node()
-
-    def parse_block_node_or_indentless_sequence(self):
-        return self.parse_node(block=True, indentless_sequence=True)
-
-    def parse_node(self, block=False, indentless_sequence=False):
-        if self.check_token(AliasToken):
-            token = self.get_token()
-            event = AliasEvent(token.value, token.start_mark, token.end_mark)
-            self.state = self.states.pop()
-        else:
-            anchor = None
-            tag = None
-            start_mark = end_mark = tag_mark = None
-            if self.check_token(AnchorToken):
-                token = self.get_token()
-                start_mark = token.start_mark
-                end_mark = token.end_mark
-                anchor = token.value
-                if self.check_token(TagToken):
-                    token = self.get_token()
-                    tag_mark = token.start_mark
-                    end_mark = token.end_mark
-                    tag = token.value
-            elif self.check_token(TagToken):
-                token = self.get_token()
-                start_mark = tag_mark = token.start_mark
-                end_mark = token.end_mark
-                tag = token.value
-                if self.check_token(AnchorToken):
-                    token = self.get_token()
-                    end_mark = token.end_mark
-                    anchor = token.value
-            if tag is not None:
-                handle, suffix = tag
-                if handle is not None:
-                    if handle not in self.tag_handles:
-                        raise ParserError("while parsing a node", start_mark,
-                                "found undefined tag handle %r" % handle.encode('utf-8'),
-                                tag_mark)
-                    tag = self.tag_handles[handle]+suffix
-                else:
-                    tag = suffix
-            #if tag == u'!':
-            #    raise ParserError("while parsing a node", start_mark,
-            #            "found non-specific tag '!'", tag_mark,
-            #            "Please check 'http://pyyaml.org/wiki/YAMLNonSpecificTag' and share your opinion.")
-            if start_mark is None:
-                start_mark = end_mark = self.peek_token().start_mark
-            event = None
-            implicit = (tag is None or tag == u'!')
-            if indentless_sequence and self.check_token(BlockEntryToken):
-                end_mark = self.peek_token().end_mark
-                event = SequenceStartEvent(anchor, tag, implicit,
-                        start_mark, end_mark)
-                self.state = self.parse_indentless_sequence_entry
-            else:
-                if self.check_token(ScalarToken):
-                    token = self.get_token()
-                    end_mark = token.end_mark
-                    if (token.plain and tag is None) or tag == u'!':
-                        implicit = (True, False)
-                    elif tag is None:
-                        implicit = (False, True)
-                    else:
-                        implicit = (False, False)
-                    event = ScalarEvent(anchor, tag, implicit, token.value,
-                            start_mark, end_mark, style=token.style)
-                    self.state = self.states.pop()
-                elif self.check_token(FlowSequenceStartToken):
-                    end_mark = self.peek_token().end_mark
-                    event = SequenceStartEvent(anchor, tag, implicit,
-                            start_mark, end_mark, flow_style=True)
-                    self.state = self.parse_flow_sequence_first_entry
-                elif self.check_token(FlowMappingStartToken):
-                    end_mark = self.peek_token().end_mark
-                    event = MappingStartEvent(anchor, tag, implicit,
-                            start_mark, end_mark, flow_style=True)
-                    self.state = self.parse_flow_mapping_first_key
-                elif block and self.check_token(BlockSequenceStartToken):
-                    end_mark = self.peek_token().start_mark
-                    event = SequenceStartEvent(anchor, tag, implicit,
-                            start_mark, end_mark, flow_style=False)
-                    self.state = self.parse_block_sequence_first_entry
-                elif block and self.check_token(BlockMappingStartToken):
-                    end_mark = self.peek_token().start_mark
-                    event = MappingStartEvent(anchor, tag, implicit,
-                            start_mark, end_mark, flow_style=False)
-                    self.state = self.parse_block_mapping_first_key
-                elif anchor is not None or tag is not None:
-                    # Empty scalars are allowed even if a tag or an anchor is
-                    # specified.
-                    event = ScalarEvent(anchor, tag, (implicit, False), u'',
-                            start_mark, end_mark)
-                    self.state = self.states.pop()
-                else:
-                    if block:
-                        node = 'block'
-                    else:
-                        node = 'flow'
-                    token = self.peek_token()
-                    raise ParserError("while parsing a %s node" % node, start_mark,
-                            "expected the node content, but found %r" % token.id,
-                            token.start_mark)
-        return event
-
-    # block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
-
-    def parse_block_sequence_first_entry(self):
-        token = self.get_token()
-        self.marks.append(token.start_mark)
-        return self.parse_block_sequence_entry()
-
-    def parse_block_sequence_entry(self):
-        if self.check_token(BlockEntryToken):
-            token = self.get_token()
-            if not self.check_token(BlockEntryToken, BlockEndToken):
-                self.states.append(self.parse_block_sequence_entry)
-                return self.parse_block_node()
-            else:
-                self.state = self.parse_block_sequence_entry
-                return self.process_empty_scalar(token.end_mark)
-        if not self.check_token(BlockEndToken):
-            token = self.peek_token()
-            raise ParserError("while parsing a block collection", self.marks[-1],
-                    "expected <block end>, but found %r" % token.id, token.start_mark)
-        token = self.get_token()
-        event = SequenceEndEvent(token.start_mark, token.end_mark)
-        self.state = self.states.pop()
-        self.marks.pop()
-        return event
-
-    # indentless_sequence ::= (BLOCK-ENTRY block_node?)+
-
-    def parse_indentless_sequence_entry(self):
-        if self.check_token(BlockEntryToken):
-            token = self.get_token()
-            if not self.check_token(BlockEntryToken,
-                    KeyToken, ValueToken, BlockEndToken):
-                self.states.append(self.parse_indentless_sequence_entry)
-                return self.parse_block_node()
-            else:
-                self.state = self.parse_indentless_sequence_entry
-                return self.process_empty_scalar(token.end_mark)
-        token = self.peek_token()
-        event = SequenceEndEvent(token.start_mark, token.start_mark)
-        self.state = self.states.pop()
-        return event
-
-    # block_mapping     ::= BLOCK-MAPPING_START
-    #                       ((KEY block_node_or_indentless_sequence?)?
-    #                       (VALUE block_node_or_indentless_sequence?)?)*
-    #                       BLOCK-END
-
-    def parse_block_mapping_first_key(self):
-        token = self.get_token()
-        self.marks.append(token.start_mark)
-        return self.parse_block_mapping_key()
-
-    def parse_block_mapping_key(self):
-        if self.check_token(KeyToken):
-            token = self.get_token()
-            if not self.check_token(KeyToken, ValueToken, BlockEndToken):
-                self.states.append(self.parse_block_mapping_value)
-                return self.parse_block_node_or_indentless_sequence()
-            else:
-                self.state = self.parse_block_mapping_value
-                return self.process_empty_scalar(token.end_mark)
-        if not self.check_token(BlockEndToken):
-            token = self.peek_token()
-            raise ParserError("while parsing a block mapping", self.marks[-1],
-                    "expected <block end>, but found %r" % token.id, token.start_mark)
-        token = self.get_token()
-        event = MappingEndEvent(token.start_mark, token.end_mark)
-        self.state = self.states.pop()
-        self.marks.pop()
-        return event
-
-    def parse_block_mapping_value(self):
-        if self.check_token(ValueToken):
-            token = self.get_token()
-            if not self.check_token(KeyToken, ValueToken, BlockEndToken):
-                self.states.append(self.parse_block_mapping_key)
-                return self.parse_block_node_or_indentless_sequence()
-            else:
-                self.state = self.parse_block_mapping_key
-                return self.process_empty_scalar(token.end_mark)
-        else:
-            self.state = self.parse_block_mapping_key
-            token = self.peek_token()
-            return self.process_empty_scalar(token.start_mark)
-
-    # flow_sequence     ::= FLOW-SEQUENCE-START
-    #                       (flow_sequence_entry FLOW-ENTRY)*
-    #                       flow_sequence_entry?
-    #                       FLOW-SEQUENCE-END
-    # flow_sequence_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
-    #
-    # Note that while production rules for both flow_sequence_entry and
-    # flow_mapping_entry are equal, their interpretations are different.
-    # For `flow_sequence_entry`, the part `KEY flow_node? (VALUE flow_node?)?`
-    # generate an inline mapping (set syntax).
-
-    def parse_flow_sequence_first_entry(self):
-        token = self.get_token()
-        self.marks.append(token.start_mark)
-        return self.parse_flow_sequence_entry(first=True)
-
-    def parse_flow_sequence_entry(self, first=False):
-        if not self.check_token(FlowSequenceEndToken):
-            if not first:
-                if self.check_token(FlowEntryToken):
-                    self.get_token()
-                else:
-                    token = self.peek_token()
-                    raise ParserError("while parsing a flow sequence", self.marks[-1],
-                            "expected ',' or ']', but got %r" % token.id, token.start_mark)
-            
-            if self.check_token(KeyToken):
-                token = self.peek_token()
-                event = MappingStartEvent(None, None, True,
-                        token.start_mark, token.end_mark,
-                        flow_style=True)
-                self.state = self.parse_flow_sequence_entry_mapping_key
-                return event
-            elif not self.check_token(FlowSequenceEndToken):
-                self.states.append(self.parse_flow_sequence_entry)
-                return self.parse_flow_node()
-        token = self.get_token()
-        event = SequenceEndEvent(token.start_mark, token.end_mark)
-        self.state = self.states.pop()
-        self.marks.pop()
-        return event
-
-    def parse_flow_sequence_entry_mapping_key(self):
-        token = self.get_token()
-        if not self.check_token(ValueToken,
-                FlowEntryToken, FlowSequenceEndToken):
-            self.states.append(self.parse_flow_sequence_entry_mapping_value)
-            return self.parse_flow_node()
-        else:
-            self.state = self.parse_flow_sequence_entry_mapping_value
-            return self.process_empty_scalar(token.end_mark)
-
-    def parse_flow_sequence_entry_mapping_value(self):
-        if self.check_token(ValueToken):
-            token = self.get_token()
-            if not self.check_token(FlowEntryToken, FlowSequenceEndToken):
-                self.states.append(self.parse_flow_sequence_entry_mapping_end)
-                return self.parse_flow_node()
-            else:
-                self.state = self.parse_flow_sequence_entry_mapping_end
-                return self.process_empty_scalar(token.end_mark)
-        else:
-            self.state = self.parse_flow_sequence_entry_mapping_end
-            token = self.peek_token()
-            return self.process_empty_scalar(token.start_mark)
-
-    def parse_flow_sequence_entry_mapping_end(self):
-        self.state = self.parse_flow_sequence_entry
-        token = self.peek_token()
-        return MappingEndEvent(token.start_mark, token.start_mark)
-
-    # flow_mapping  ::= FLOW-MAPPING-START
-    #                   (flow_mapping_entry FLOW-ENTRY)*
-    #                   flow_mapping_entry?
-    #                   FLOW-MAPPING-END
-    # flow_mapping_entry    ::= flow_node | KEY flow_node? (VALUE flow_node?)?
-
-    def parse_flow_mapping_first_key(self):
-        token = self.get_token()
-        self.marks.append(token.start_mark)
-        return self.parse_flow_mapping_key(first=True)
-
-    def parse_flow_mapping_key(self, first=False):
-        if not self.check_token(FlowMappingEndToken):
-            if not first:
-                if self.check_token(FlowEntryToken):
-                    self.get_token()
-                else:
-                    token = self.peek_token()
-                    raise ParserError("while parsing a flow mapping", self.marks[-1],
-                            "expected ',' or '}', but got %r" % token.id, token.start_mark)
-            if self.check_token(KeyToken):
-                token = self.get_token()
-                if not self.check_token(ValueToken,
-                        FlowEntryToken, FlowMappingEndToken):
-                    self.states.append(self.parse_flow_mapping_value)
-                    return self.parse_flow_node()
-                else:
-                    self.state = self.parse_flow_mapping_value
-                    return self.process_empty_scalar(token.end_mark)
-            elif not self.check_token(FlowMappingEndToken):
-                self.states.append(self.parse_flow_mapping_empty_value)
-                return self.parse_flow_node()
-        token = self.get_token()
-        event = MappingEndEvent(token.start_mark, token.end_mark)
-        self.state = self.states.pop()
-        self.marks.pop()
-        return event
-
-    def parse_flow_mapping_value(self):
-        if self.check_token(ValueToken):
-            token = self.get_token()
-            if not self.check_token(FlowEntryToken, FlowMappingEndToken):
-                self.states.append(self.parse_flow_mapping_key)
-                return self.parse_flow_node()
-            else:
-                self.state = self.parse_flow_mapping_key
-                return self.process_empty_scalar(token.end_mark)
-        else:
-            self.state = self.parse_flow_mapping_key
-            token = self.peek_token()
-            return self.process_empty_scalar(token.start_mark)
-
-    def parse_flow_mapping_empty_value(self):
-        self.state = self.parse_flow_mapping_key
-        return self.process_empty_scalar(self.peek_token().start_mark)
-
-    def process_empty_scalar(self, mark):
-        return ScalarEvent(None, None, (True, False), u'', mark, mark)
-
diff --git a/tablib/packages/yaml/reader.py b/tablib/packages/yaml/reader.py
deleted file mode 100644
index 1e7a4db..0000000
--- a/tablib/packages/yaml/reader.py
+++ /dev/null
@@ -1,225 +0,0 @@
-# This module contains abstractions for the input stream. You don't have to
-# looks further, there are no pretty code.
-#
-# We define two classes here.
-#
-#   Mark(source, line, column)
-# It's just a record and its only use is producing nice error messages.
-# Parser does not use it for any other purposes.
-#
-#   Reader(source, data)
-# Reader determines the encoding of `data` and converts it to unicode.
-# Reader provides the following methods and attributes:
-#   reader.peek(length=1) - return the next `length` characters
-#   reader.forward(length=1) - move the current position to `length` characters.
-#   reader.index - the number of the current character.
-#   reader.line, stream.column - the line and the column of the current character.
-
-__all__ = ['Reader', 'ReaderError']
-
-from error import YAMLError, Mark
-
-import codecs, re
-
-# Unfortunately, codec functions in Python 2.3 does not support the `finish`
-# arguments, so we have to write our own wrappers.
-
-try:
-    codecs.utf_8_decode('', 'strict', False)
-    from codecs import utf_8_decode, utf_16_le_decode, utf_16_be_decode
-
-except TypeError:
-
-    def utf_16_le_decode(data, errors, finish=False):
-        if not finish and len(data) % 2 == 1:
-            data = data[:-1]
-        return codecs.utf_16_le_decode(data, errors)
-
-    def utf_16_be_decode(data, errors, finish=False):
-        if not finish and len(data) % 2 == 1:
-            data = data[:-1]
-        return codecs.utf_16_be_decode(data, errors)
-
-    def utf_8_decode(data, errors, finish=False):
-        if not finish:
-            # We are trying to remove a possible incomplete multibyte character
-            # from the suffix of the data.
-            # The first byte of a multi-byte sequence is in the range 0xc0 to 0xfd.
-            # All further bytes are in the range 0x80 to 0xbf.
-            # UTF-8 encoded UCS characters may be up to six bytes long.
-            count = 0
-            while count < 5 and count < len(data)   \
-                    and '\x80' <= data[-count-1] <= '\xBF':
-                count -= 1
-            if count < 5 and count < len(data)  \
-                    and '\xC0' <= data[-count-1] <= '\xFD':
-                data = data[:-count-1]
-        return codecs.utf_8_decode(data, errors)
-
-class ReaderError(YAMLError):
-
-    def __init__(self, name, position, character, encoding, reason):
-        self.name = name
-        self.character = character
-        self.position = position
-        self.encoding = encoding
-        self.reason = reason
-
-    def __str__(self):
-        if isinstance(self.character, str):
-            return "'%s' codec can't decode byte #x%02x: %s\n"  \
-                    "  in \"%s\", position %d"    \
-                    % (self.encoding, ord(self.character), self.reason,
-                            self.name, self.position)
-        else:
-            return "unacceptable character #x%04x: %s\n"    \
-                    "  in \"%s\", position %d"    \
-                    % (self.character, self.reason,
-                            self.name, self.position)
-
-class Reader(object):
-    # Reader:
-    # - determines the data encoding and converts it to unicode,
-    # - checks if characters are in allowed range,
-    # - adds '\0' to the end.
-
-    # Reader accepts
-    #  - a `str` object,
-    #  - a `unicode` object,
-    #  - a file-like object with its `read` method returning `str`,
-    #  - a file-like object with its `read` method returning `unicode`.
-
-    # Yeah, it's ugly and slow.
-
-    def __init__(self, stream):
-        self.name = None
-        self.stream = None
-        self.stream_pointer = 0
-        self.eof = True
-        self.buffer = u''
-        self.pointer = 0
-        self.raw_buffer = None
-        self.raw_decode = None
-        self.encoding = None
-        self.index = 0
-        self.line = 0
-        self.column = 0
-        if isinstance(stream, unicode):
-            self.name = "<unicode string>"
-            self.check_printable(stream)
-            self.buffer = stream+u'\0'
-        elif isinstance(stream, str):
-            self.name = "<string>"
-            self.raw_buffer = stream
-            self.determine_encoding()
-        else:
-            self.stream = stream
-            self.name = getattr(stream, 'name', "<file>")
-            self.eof = False
-            self.raw_buffer = ''
-            self.determine_encoding()
-
-    def peek(self, index=0):
-        try:
-            return self.buffer[self.pointer+index]
-        except IndexError:
-            self.update(index+1)
-            return self.buffer[self.pointer+index]
-
-    def prefix(self, length=1):
-        if self.pointer+length >= len(self.buffer):
-            self.update(length)
-        return self.buffer[self.pointer:self.pointer+length]
-
-    def forward(self, length=1):
-        if self.pointer+length+1 >= len(self.buffer):
-            self.update(length+1)
-        while length:
-            ch = self.buffer[self.pointer]
-            self.pointer += 1
-            self.index += 1
-            if ch in u'\n\x85\u2028\u2029'  \
-                    or (ch == u'\r' and self.buffer[self.pointer] != u'\n'):
-                self.line += 1
-                self.column = 0
-            elif ch != u'\uFEFF':
-                self.column += 1
-            length -= 1
-
-    def get_mark(self):
-        if self.stream is None:
-            return Mark(self.name, self.index, self.line, self.column,
-                    self.buffer, self.pointer)
-        else:
-            return Mark(self.name, self.index, self.line, self.column,
-                    None, None)
-
-    def determine_encoding(self):
-        while not self.eof and len(self.raw_buffer) < 2:
-            self.update_raw()
-        if not isinstance(self.raw_buffer, unicode):
-            if self.raw_buffer.startswith(codecs.BOM_UTF16_LE):
-                self.raw_decode = utf_16_le_decode
-                self.encoding = 'utf-16-le'
-            elif self.raw_buffer.startswith(codecs.BOM_UTF16_BE):
-                self.raw_decode = utf_16_be_decode
-                self.encoding = 'utf-16-be'
-            else:
-                self.raw_decode = utf_8_decode
-                self.encoding = 'utf-8'
-        self.update(1)
-
-    NON_PRINTABLE = re.compile(u'[^\x09\x0A\x0D\x20-\x7E\x85\xA0-\uD7FF\uE000-\uFFFD]')
-    def check_printable(self, data):
-        match = self.NON_PRINTABLE.search(data)
-        if match:
-            character = match.group()
-            position = self.index+(len(self.buffer)-self.pointer)+match.start()
-            raise ReaderError(self.name, position, ord(character),
-                    'unicode', "special characters are not allowed")
-
-    def update(self, length):
-        if self.raw_buffer is None:
-            return
-        self.buffer = self.buffer[self.pointer:]
-        self.pointer = 0
-        while len(self.buffer) < length:
-            if not self.eof:
-                self.update_raw()
-            if self.raw_decode is not None:
-                try:
-                    data, converted = self.raw_decode(self.raw_buffer,
-                            'strict', self.eof)
-                except UnicodeDecodeError, exc:
-                    character = exc.object[exc.start]
-                    if self.stream is not None:
-                        position = self.stream_pointer-len(self.raw_buffer)+exc.start
-                    else:
-                        position = exc.start
-                    raise ReaderError(self.name, position, character,
-                            exc.encoding, exc.reason)
-            else:
-                data = self.raw_buffer
-                converted = len(data)
-            self.check_printable(data)
-            self.buffer += data
-            self.raw_buffer = self.raw_buffer[converted:]
-            if self.eof:
-                self.buffer += u'\0'
-                self.raw_buffer = None
-                break
-
-    def update_raw(self, size=1024):
-        data = self.stream.read(size)
-        if data:
-            self.raw_buffer += data
-            self.stream_pointer += len(data)
-        else:
-            self.eof = True
-
-#try:
-#    import psyco
-#    psyco.bind(Reader)
-#except ImportError:
-#    pass
-
diff --git a/tablib/packages/yaml/representer.py b/tablib/packages/yaml/representer.py
deleted file mode 100644
index f5606ec..0000000
--- a/tablib/packages/yaml/representer.py
+++ /dev/null
@@ -1,489 +0,0 @@
-
-__all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer',
-    'RepresenterError']
-
-from error import *
-from nodes import *
-
-import datetime
-
-try:
-    set
-except NameError:
-    from sets import Set as set
-
-import sys, copy_reg, types
-
-class RepresenterError(YAMLError):
-    pass
-
-class BaseRepresenter(object):
-
-    yaml_representers = {}
-    yaml_multi_representers = {}
-
-    def __init__(self, default_style=None, default_flow_style=None):
-        self.default_style = default_style
-        self.default_flow_style = default_flow_style
-        self.represented_objects = {}
-        self.object_keeper = []
-        self.alias_key = None
-
-    def represent(self, data):
-        node = self.represent_data(data)
-        self.serialize(node)
-        self.represented_objects = {}
-        self.object_keeper = []
-        self.alias_key = None
-
-    def get_classobj_bases(self, cls):
-        bases = [cls]
-        for base in cls.__bases__:
-            bases.extend(self.get_classobj_bases(base))
-        return bases
-
-    def represent_data(self, data):
-        if self.ignore_aliases(data):
-            self.alias_key = None
-        else:
-            self.alias_key = id(data)
-        if self.alias_key is not None:
-            if self.alias_key in self.represented_objects:
-                node = self.represented_objects[self.alias_key]
-                #if node is None:
-                #    raise RepresenterError("recursive objects are not allowed: %r" % data)
-                return node
-            #self.represented_objects[alias_key] = None
-            self.object_keeper.append(data)
-        data_types = type(data).__mro__
-        if type(data) is types.InstanceType:
-            data_types = self.get_classobj_bases(data.__class__)+list(data_types)
-        if data_types[0] in self.yaml_representers:
-            node = self.yaml_representers[data_types[0]](self, data)
-        else:
-            for data_type in data_types:
-                if data_type in self.yaml_multi_representers:
-                    node = self.yaml_multi_representers[data_type](self, data)
-                    break
-            else:
-                if None in self.yaml_multi_representers:
-                    node = self.yaml_multi_representers[None](self, data)
-                elif None in self.yaml_representers:
-                    node = self.yaml_representers[None](self, data)
-                else:
-                    node = ScalarNode(None, unicode(data))
-        #if alias_key is not None:
-        #    self.represented_objects[alias_key] = node
-        return node
-
-    def add_representer(cls, data_type, representer):
-        if not 'yaml_representers' in cls.__dict__:
-            cls.yaml_representers = cls.yaml_representers.copy()
-        cls.yaml_representers[data_type] = representer
-    add_representer = classmethod(add_representer)
-
-    def add_multi_representer(cls, data_type, representer):
-        if not 'yaml_multi_representers' in cls.__dict__:
-            cls.yaml_multi_representers = cls.yaml_multi_representers.copy()
-        cls.yaml_multi_representers[data_type] = representer
-    add_multi_representer = classmethod(add_multi_representer)
-
-    def represent_scalar(self, tag, value, style=None):
-        if style is None:
-            style = self.default_style
-        node = ScalarNode(tag, value, style=style)
-        if self.alias_key is not None:
-            self.represented_objects[self.alias_key] = node
-        return node
-
-    def represent_sequence(self, tag, sequence, flow_style=None):
-        value = []
-        node = SequenceNode(tag, value, flow_style=flow_style)
-        if self.alias_key is not None:
-            self.represented_objects[self.alias_key] = node
-        best_style = True
-        for item in sequence:
-            node_item = self.represent_data(item)
-            if not (isinstance(node_item, ScalarNode) and not node_item.style):
-                best_style = False
-            value.append(node_item)
-        if flow_style is None:
-            if self.default_flow_style is not None:
-                node.flow_style = self.default_flow_style
-            else:
-                node.flow_style = best_style
-        return node
-
-    def represent_mapping(self, tag, mapping, flow_style=None):
-        value = []
-        node = MappingNode(tag, value, flow_style=flow_style)
-        if self.alias_key is not None:
-            self.represented_objects[self.alias_key] = node
-        best_style = True
-        if hasattr(mapping, 'items'):
-            mapping = mapping.items()
-            mapping.sort()
-        for item_key, item_value in mapping:
-            node_key = self.represent_data(item_key)
-            node_value = self.represent_data(item_value)
-            if not (isinstance(node_key, ScalarNode) and not node_key.style):
-                best_style = False
-            if not (isinstance(node_value, ScalarNode) and not node_value.style):
-                best_style = False
-            value.append((node_key, node_value))
-        if flow_style is None:
-            if self.default_flow_style is not None:
-                node.flow_style = self.default_flow_style
-            else:
-                node.flow_style = best_style
-        return node
-
-    def ignore_aliases(self, data):
-        return False
-
-class SafeRepresenter(BaseRepresenter):
-
-    def ignore_aliases(self, data):
-        if data in [None, ()]:
-            return True
-        if isinstance(data, (str, unicode, bool, int, float)):
-            return True
-
-    def represent_none(self, data):
-        return self.represent_scalar(u'tag:yaml.org,2002:null',
-                u'null')
-
-    def represent_str(self, data):
-        tag = None
-        style = None
-        try:
-            data = unicode(data, 'ascii')
-            tag = u'tag:yaml.org,2002:str'
-        except UnicodeDecodeError:
-            try:
-                data = unicode(data, 'utf-8')
-                tag = u'tag:yaml.org,2002:str'
-            except UnicodeDecodeError:
-                data = data.encode('base64')
-                tag = u'tag:yaml.org,2002:binary'
-                style = '|'
-        return self.represent_scalar(tag, data, style=style)
-
-    def represent_unicode(self, data):
-        return self.represent_scalar(u'tag:yaml.org,2002:str', data)
-
-    def represent_bool(self, data):
-        if data:
-            value = u'true'
-        else:
-            value = u'false'
-        return self.represent_scalar(u'tag:yaml.org,2002:bool', value)
-
-    def represent_int(self, data):
-        return self.represent_scalar(u'tag:yaml.org,2002:int', unicode(data))
-
-    def represent_long(self, data):
-        return self.represent_scalar(u'tag:yaml.org,2002:int', unicode(data))
-
-    inf_value = 1e300
-    while repr(inf_value) != repr(inf_value*inf_value):
-        inf_value *= inf_value
-
-    def represent_float(self, data):
-        if data != data or (data == 0.0 and data == 1.0):
-            value = u'.nan'
-        elif data == self.inf_value:
-            value = u'.inf'
-        elif data == -self.inf_value:
-            value = u'-.inf'
-        else:
-            value = unicode(repr(data)).lower()
-            # Note that in some cases `repr(data)` represents a float number
-            # without the decimal parts.  For instance:
-            #   >>> repr(1e17)
-            #   '1e17'
-            # Unfortunately, this is not a valid float representation according
-            # to the definition of the `!!float` tag.  We fix this by adding
-            # '.0' before the 'e' symbol.
-            if u'.' not in value and u'e' in value:
-                value = value.replace(u'e', u'.0e', 1)
-        return self.represent_scalar(u'tag:yaml.org,2002:float', value)
-
-    def represent_list(self, data):
-        #pairs = (len(data) > 0 and isinstance(data, list))
-        #if pairs:
-        #    for item in data:
-        #        if not isinstance(item, tuple) or len(item) != 2:
-        #            pairs = False
-        #            break
-        #if not pairs:
-            return self.represent_sequence(u'tag:yaml.org,2002:seq', data)
-        #value = []
-        #for item_key, item_value in data:
-        #    value.append(self.represent_mapping(u'tag:yaml.org,2002:map',
-        #        [(item_key, item_value)]))
-        #return SequenceNode(u'tag:yaml.org,2002:pairs', value)
-
-    def represent_dict(self, data):
-        return self.represent_mapping(u'tag:yaml.org,2002:map', data)
-
-    def represent_set(self, data):
-        value = {}
-        for key in data:
-            value[key] = None
-        return self.represent_mapping(u'tag:yaml.org,2002:set', value)
-
-    def represent_date(self, data):
-        value = unicode(data.isoformat())
-        return self.represent_scalar(u'tag:yaml.org,2002:timestamp', value)
-
-    def represent_datetime(self, data):
-        value = unicode(data.isoformat(' '))
-        return self.represent_scalar(u'tag:yaml.org,2002:timestamp', value)
-
-    def represent_yaml_object(self, tag, data, cls, flow_style=None):
-        if hasattr(data, '__getstate__'):
-            state = data.__getstate__()
-        else:
-            state = data.__dict__.copy()
-        return self.represent_mapping(tag, state, flow_style=flow_style)
-
-    def represent_undefined(self, data):
-        raise RepresenterError("cannot represent an object: %s" % data)
-
-SafeRepresenter.add_representer(type(None),
-        SafeRepresenter.represent_none)
-
-SafeRepresenter.add_representer(str,
-        SafeRepresenter.represent_str)
-
-SafeRepresenter.add_representer(unicode,
-        SafeRepresenter.represent_unicode)
-
-SafeRepresenter.add_representer(bool,
-        SafeRepresenter.represent_bool)
-
-SafeRepresenter.add_representer(int,
-        SafeRepresenter.represent_int)
-
-SafeRepresenter.add_representer(long,
-        SafeRepresenter.represent_long)
-
-SafeRepresenter.add_representer(float,
-        SafeRepresenter.represent_float)
-
-SafeRepresenter.add_representer(list,
-        SafeRepresenter.represent_list)
-
-SafeRepresenter.add_representer(tuple,
-        SafeRepresenter.represent_list)
-
-SafeRepresenter.add_representer(dict,
-        SafeRepresenter.represent_dict)
-
-SafeRepresenter.add_representer(set,
-        SafeRepresenter.represent_set)
-
-SafeRepresenter.add_representer(datetime.date,
-        SafeRepresenter.represent_date)
-
-SafeRepresenter.add_representer(datetime.datetime,
-        SafeRepresenter.represent_datetime)
-
-SafeRepresenter.add_representer(None,
-        SafeRepresenter.represent_undefined)
-
-class Representer(SafeRepresenter):
-
-    def represent_str(self, data):
-        tag = None
-        style = None
-        try:
-            data = unicode(data, 'ascii')
-            tag = u'tag:yaml.org,2002:str'
-        except UnicodeDecodeError:
-            try:
-                data = unicode(data, 'utf-8')
-                tag = u'tag:yaml.org,2002:python/str'
-            except UnicodeDecodeError:
-                data = data.encode('base64')
-                tag = u'tag:yaml.org,2002:binary'
-                style = '|'
-        return self.represent_scalar(tag, data, style=style)
-
-    def represent_unicode(self, data):
-        tag = None
-        try:
-            data.encode('ascii')
-            tag = u'tag:yaml.org,2002:python/unicode'
-        except UnicodeEncodeError:
-            tag = u'tag:yaml.org,2002:str'
-        return self.represent_scalar(tag, data)
-
-    def represent_long(self, data):
-        tag = u'tag:yaml.org,2002:int'
-        if int(data) is not data:
-            tag = u'tag:yaml.org,2002:python/long'
-        return self.represent_scalar(tag, unicode(data))
-
-    def represent_complex(self, data):
-        if data.imag == 0.0:
-            data = u'%r' % data.real
-        elif data.real == 0.0:
-            data = u'%rj' % data.imag
-        elif data.imag > 0:
-            data = u'%r+%rj' % (data.real, data.imag)
-        else:
-            data = u'%r%rj' % (data.real, data.imag)
-        return self.represent_scalar(u'tag:yaml.org,2002:python/complex', data)
-
-    def represent_tuple(self, data):
-        return self.represent_sequence(u'tag:yaml.org,2002:python/tuple', data)
-
-    def represent_name(self, data):
-        name = u'%s.%s' % (data.__module__, data.__name__)
-        return self.represent_scalar(u'tag:yaml.org,2002:python/name:'+name, u'')
-
-    def represent_module(self, data):
-        return self.represent_scalar(
-                u'tag:yaml.org,2002:python/module:'+data.__name__, u'')
-
-    def represent_instance(self, data):
-        # For instances of classic classes, we use __getinitargs__ and
-        # __getstate__ to serialize the data.
-
-        # If data.__getinitargs__ exists, the object must be reconstructed by
-        # calling cls(**args), where args is a tuple returned by
-        # __getinitargs__. Otherwise, the cls.__init__ method should never be
-        # called and the class instance is created by instantiating a trivial
-        # class and assigning to the instance's __class__ variable.
-
-        # If data.__getstate__ exists, it returns the state of the object.
-        # Otherwise, the state of the object is data.__dict__.
-
-        # We produce either a !!python/object or !!python/object/new node.
-        # If data.__getinitargs__ does not exist and state is a dictionary, we
-        # produce a !!python/object node . Otherwise we produce a
-        # !!python/object/new node.
-
-        cls = data.__class__
-        class_name = u'%s.%s' % (cls.__module__, cls.__name__)
-        args = None
-        state = None
-        if hasattr(data, '__getinitargs__'):
-            args = list(data.__getinitargs__())
-        if hasattr(data, '__getstate__'):
-            state = data.__getstate__()
-        else:
-            state = data.__dict__
-        if args is None and isinstance(state, dict):
-            return self.represent_mapping(
-                    u'tag:yaml.org,2002:python/object:'+class_name, state)
-        if isinstance(state, dict) and not state:
-            return self.represent_sequence(
-                    u'tag:yaml.org,2002:python/object/new:'+class_name, args)
-        value = {}
-        if args:
-            value['args'] = args
-        value['state'] = state
-        return self.represent_mapping(
-                u'tag:yaml.org,2002:python/object/new:'+class_name, value)
-
-    def represent_object(self, data):
-        # We use __reduce__ API to save the data. data.__reduce__ returns
-        # a tuple of length 2-5:
-        #   (function, args, state, listitems, dictitems)
-
-        # For reconstructing, we calls function(*args), then set its state,
-        # listitems, and dictitems if they are not None.
-
-        # A special case is when function.__name__ == '__newobj__'. In this
-        # case we create the object with args[0].__new__(*args).
-
-        # Another special case is when __reduce__ returns a string - we don't
-        # support it.
-
-        # We produce a !!python/object, !!python/object/new or
-        # !!python/object/apply node.
-
-        cls = type(data)
-        if cls in copy_reg.dispatch_table:
-            reduce = copy_reg.dispatch_table[cls](data)
-        elif hasattr(data, '__reduce_ex__'):
-            reduce = data.__reduce_ex__(2)
-        elif hasattr(data, '__reduce__'):
-            reduce = data.__reduce__()
-        else:
-            raise RepresenterError("cannot represent object: %r" % data)
-        reduce = (list(reduce)+[None]*5)[:5]
-        function, args, state, listitems, dictitems = reduce
-        args = list(args)
-        if state is None:
-            state = {}
-        if listitems is not None:
-            listitems = list(listitems)
-        if dictitems is not None:
-            dictitems = dict(dictitems)
-        if function.__name__ == '__newobj__':
-            function = args[0]
-            args = args[1:]
-            tag = u'tag:yaml.org,2002:python/object/new:'
-            newobj = True
-        else:
-            tag = u'tag:yaml.org,2002:python/object/apply:'
-            newobj = False
-        function_name = u'%s.%s' % (function.__module__, function.__name__)
-        if not args and not listitems and not dictitems \
-                and isinstance(state, dict) and newobj:
-            return self.represent_mapping(
-                    u'tag:yaml.org,2002:python/object:'+function_name, state)
-        if not listitems and not dictitems  \
-                and isinstance(state, dict) and not state:
-            return self.represent_sequence(tag+function_name, args)
-        value = {}
-        if args:
-            value['args'] = args
-        if state or not isinstance(state, dict):
-            value['state'] = state
-        if listitems:
-            value['listitems'] = listitems
-        if dictitems:
-            value['dictitems'] = dictitems
-        return self.represent_mapping(tag+function_name, value)
-
-Representer.add_representer(str,
-        Representer.represent_str)
-
-Representer.add_representer(unicode,
-        Representer.represent_unicode)
-
-Representer.add_representer(long,
-        Representer.represent_long)
-
-Representer.add_representer(complex,
-        Representer.represent_complex)
-
-Representer.add_representer(tuple,
-        Representer.represent_tuple)
-
-Representer.add_representer(type,
-        Representer.represent_name)
-
-Representer.add_representer(types.ClassType,
-        Representer.represent_name)
-
-Representer.add_representer(types.FunctionType,
-        Representer.represent_name)
-
-Representer.add_representer(types.BuiltinFunctionType,
-        Representer.represent_name)
-
-Representer.add_representer(types.ModuleType,
-        Representer.represent_module)
-
-Representer.add_multi_representer(types.InstanceType,
-        Representer.represent_instance)
-
-Representer.add_multi_representer(object,
-        Representer.represent_object)
-
diff --git a/tablib/packages/yaml/resolver.py b/tablib/packages/yaml/resolver.py
deleted file mode 100644
index 6b5ab87..0000000
--- a/tablib/packages/yaml/resolver.py
+++ /dev/null
@@ -1,224 +0,0 @@
-
-__all__ = ['BaseResolver', 'Resolver']
-
-from error import *
-from nodes import *
-
-import re
-
-class ResolverError(YAMLError):
-    pass
-
-class BaseResolver(object):
-
-    DEFAULT_SCALAR_TAG = u'tag:yaml.org,2002:str'
-    DEFAULT_SEQUENCE_TAG = u'tag:yaml.org,2002:seq'
-    DEFAULT_MAPPING_TAG = u'tag:yaml.org,2002:map'
-
-    yaml_implicit_resolvers = {}
-    yaml_path_resolvers = {}
-
-    def __init__(self):
-        self.resolver_exact_paths = []
-        self.resolver_prefix_paths = []
-
-    def add_implicit_resolver(cls, tag, regexp, first):
-        if not 'yaml_implicit_resolvers' in cls.__dict__:
-            cls.yaml_implicit_resolvers = cls.yaml_implicit_resolvers.copy()
-        if first is None:
-            first = [None]
-        for ch in first:
-            cls.yaml_implicit_resolvers.setdefault(ch, []).append((tag, regexp))
-    add_implicit_resolver = classmethod(add_implicit_resolver)
-
-    def add_path_resolver(cls, tag, path, kind=None):
-        # Note: `add_path_resolver` is experimental.  The API could be changed.
-        # `new_path` is a pattern that is matched against the path from the
-        # root to the node that is being considered.  `node_path` elements are
-        # tuples `(node_check, index_check)`.  `node_check` is a node class:
-        # `ScalarNode`, `SequenceNode`, `MappingNode` or `None`.  `None`
-        # matches any kind of a node.  `index_check` could be `None`, a boolean
-        # value, a string value, or a number.  `None` and `False` match against
-        # any _value_ of sequence and mapping nodes.  `True` matches against
-        # any _key_ of a mapping node.  A string `index_check` matches against
-        # a mapping value that corresponds to a scalar key which content is
-        # equal to the `index_check` value.  An integer `index_check` matches
-        # against a sequence value with the index equal to `index_check`.
-        if not 'yaml_path_resolvers' in cls.__dict__:
-            cls.yaml_path_resolvers = cls.yaml_path_resolvers.copy()
-        new_path = []
-        for element in path:
-            if isinstance(element, (list, tuple)):
-                if len(element) == 2:
-                    node_check, index_check = element
-                elif len(element) == 1:
-                    node_check = element[0]
-                    index_check = True
-                else:
-                    raise ResolverError("Invalid path element: %s" % element)
-            else:
-                node_check = None
-                index_check = element
-            if node_check is str:
-                node_check = ScalarNode
-            elif node_check is list:
-                node_check = SequenceNode
-            elif node_check is dict:
-                node_check = MappingNode
-            elif node_check not in [ScalarNode, SequenceNode, MappingNode]  \
-                    and not isinstance(node_check, basestring)  \
-                    and node_check is not None:
-                raise ResolverError("Invalid node checker: %s" % node_check)
-            if not isinstance(index_check, (basestring, int))   \
-                    and index_check is not None:
-                raise ResolverError("Invalid index checker: %s" % index_check)
-            new_path.append((node_check, index_check))
-        if kind is str:
-            kind = ScalarNode
-        elif kind is list:
-            kind = SequenceNode
-        elif kind is dict:
-            kind = MappingNode
-        elif kind not in [ScalarNode, SequenceNode, MappingNode]    \
-                and kind is not None:
-            raise ResolverError("Invalid node kind: %s" % kind)
-        cls.yaml_path_resolvers[tuple(new_path), kind] = tag
-    add_path_resolver = classmethod(add_path_resolver)
-
-    def descend_resolver(self, current_node, current_index):
-        if not self.yaml_path_resolvers:
-            return
-        exact_paths = {}
-        prefix_paths = []
-        if current_node:
-            depth = len(self.resolver_prefix_paths)
-            for path, kind in self.resolver_prefix_paths[-1]:
-                if self.check_resolver_prefix(depth, path, kind,
-                        current_node, current_index):
-                    if len(path) > depth:
-                        prefix_paths.append((path, kind))
-                    else:
-                        exact_paths[kind] = self.yaml_path_resolvers[path, kind]
-        else:
-            for path, kind in self.yaml_path_resolvers:
-                if not path:
-                    exact_paths[kind] = self.yaml_path_resolvers[path, kind]
-                else:
-                    prefix_paths.append((path, kind))
-        self.resolver_exact_paths.append(exact_paths)
-        self.resolver_prefix_paths.append(prefix_paths)
-
-    def ascend_resolver(self):
-        if not self.yaml_path_resolvers:
-            return
-        self.resolver_exact_paths.pop()
-        self.resolver_prefix_paths.pop()
-
-    def check_resolver_prefix(self, depth, path, kind,
-            current_node, current_index):
-        node_check, index_check = path[depth-1]
-        if isinstance(node_check, basestring):
-            if current_node.tag != node_check:
-                return
-        elif node_check is not None:
-            if not isinstance(current_node, node_check):
-                return
-        if index_check is True and current_index is not None:
-            return
-        if (index_check is False or index_check is None)    \
-                and current_index is None:
-            return
-        if isinstance(index_check, basestring):
-            if not (isinstance(current_index, ScalarNode)
-                    and index_check == current_index.value):
-                return
-        elif isinstance(index_check, int) and not isinstance(index_check, bool):
-            if index_check != current_index:
-                return
-        return True
-
-    def resolve(self, kind, value, implicit):
-        if kind is ScalarNode and implicit[0]:
-            if value == u'':
-                resolvers = self.yaml_implicit_resolvers.get(u'', [])
-            else:
-                resolvers = self.yaml_implicit_resolvers.get(value[0], [])
-            resolvers += self.yaml_implicit_resolvers.get(None, [])
-            for tag, regexp in resolvers:
-                if regexp.match(value):
-                    return tag
-            implicit = implicit[1]
-        if self.yaml_path_resolvers:
-            exact_paths = self.resolver_exact_paths[-1]
-            if kind in exact_paths:
-                return exact_paths[kind]
-            if None in exact_paths:
-                return exact_paths[None]
-        if kind is ScalarNode:
-            return self.DEFAULT_SCALAR_TAG
-        elif kind is SequenceNode:
-            return self.DEFAULT_SEQUENCE_TAG
-        elif kind is MappingNode:
-            return self.DEFAULT_MAPPING_TAG
-
-class Resolver(BaseResolver):
-    pass
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:bool',
-        re.compile(ur'''^(?:yes|Yes|YES|no|No|NO
-                    |true|True|TRUE|false|False|FALSE
-                    |on|On|ON|off|Off|OFF)$''', re.X),
-        list(u'yYnNtTfFoO'))
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:float',
-        re.compile(ur'''^(?:[-+]?(?:[0-9][0-9_]*)\.[0-9_]*(?:[eE][-+][0-9]+)?
-                    |\.[0-9_]+(?:[eE][-+][0-9]+)?
-                    |[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\.[0-9_]*
-                    |[-+]?\.(?:inf|Inf|INF)
-                    |\.(?:nan|NaN|NAN))$''', re.X),
-        list(u'-+0123456789.'))
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:int',
-        re.compile(ur'''^(?:[-+]?0b[0-1_]+
-                    |[-+]?0[0-7_]+
-                    |[-+]?(?:0|[1-9][0-9_]*)
-                    |[-+]?0x[0-9a-fA-F_]+
-                    |[-+]?[1-9][0-9_]*(?::[0-5]?[0-9])+)$''', re.X),
-        list(u'-+0123456789'))
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:merge',
-        re.compile(ur'^(?:<<)$'),
-        [u'<'])
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:null',
-        re.compile(ur'''^(?: ~
-                    |null|Null|NULL
-                    | )$''', re.X),
-        [u'~', u'n', u'N', u''])
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:timestamp',
-        re.compile(ur'''^(?:[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]
-                    |[0-9][0-9][0-9][0-9] -[0-9][0-9]? -[0-9][0-9]?
-                     (?:[Tt]|[ \t]+)[0-9][0-9]?
-                     :[0-9][0-9] :[0-9][0-9] (?:\.[0-9]*)?
-                     (?:[ \t]*(?:Z|[-+][0-9][0-9]?(?::[0-9][0-9])?))?)$''', re.X),
-        list(u'0123456789'))
-
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:value',
-        re.compile(ur'^(?:=)$'),
-        [u'='])
-
-# The following resolver is only for documentation purposes. It cannot work
-# because plain scalars cannot start with '!', '&', or '*'.
-Resolver.add_implicit_resolver(
-        u'tag:yaml.org,2002:yaml',
-        re.compile(ur'^(?:!|&|\*)$'),
-        list(u'!&*'))
-
diff --git a/tablib/packages/yaml/scanner.py b/tablib/packages/yaml/scanner.py
deleted file mode 100644
index 5228fad..0000000
--- a/tablib/packages/yaml/scanner.py
+++ /dev/null
@@ -1,1457 +0,0 @@
-
-# Scanner produces tokens of the following types:
-# STREAM-START
-# STREAM-END
-# DIRECTIVE(name, value)
-# DOCUMENT-START
-# DOCUMENT-END
-# BLOCK-SEQUENCE-START
-# BLOCK-MAPPING-START
-# BLOCK-END
-# FLOW-SEQUENCE-START
-# FLOW-MAPPING-START
-# FLOW-SEQUENCE-END
-# FLOW-MAPPING-END
-# BLOCK-ENTRY
-# FLOW-ENTRY
-# KEY
-# VALUE
-# ALIAS(value)
-# ANCHOR(value)
-# TAG(value)
-# SCALAR(value, plain, style)
-#
-# Read comments in the Scanner code for more details.
-#
-
-__all__ = ['Scanner', 'ScannerError']
-
-from error import MarkedYAMLError
-from tokens import *
-
-class ScannerError(MarkedYAMLError):
-    pass
-
-class SimpleKey(object):
-    # See below simple keys treatment.
-
-    def __init__(self, token_number, required, index, line, column, mark):
-        self.token_number = token_number
-        self.required = required
-        self.index = index
-        self.line = line
-        self.column = column
-        self.mark = mark
-
-class Scanner(object):
-
-    def __init__(self):
-        """Initialize the scanner."""
-        # It is assumed that Scanner and Reader will have a common descendant.
-        # Reader do the dirty work of checking for BOM and converting the
-        # input data to Unicode. It also adds NUL to the end.
-        #
-        # Reader supports the following methods
-        #   self.peek(i=0)       # peek the next i-th character
-        #   self.prefix(l=1)     # peek the next l characters
-        #   self.forward(l=1)    # read the next l characters and move the pointer.
-
-        # Had we reached the end of the stream?
-        self.done = False
-
-        # The number of unclosed '{' and '['. `flow_level == 0` means block
-        # context.
-        self.flow_level = 0
-
-        # List of processed tokens that are not yet emitted.
-        self.tokens = []
-
-        # Add the STREAM-START token.
-        self.fetch_stream_start()
-
-        # Number of tokens that were emitted through the `get_token` method.
-        self.tokens_taken = 0
-
-        # The current indentation level.
-        self.indent = -1
-
-        # Past indentation levels.
-        self.indents = []
-
-        # Variables related to simple keys treatment.
-
-        # A simple key is a key that is not denoted by the '?' indicator.
-        # Example of simple keys:
-        #   ---
-        #   block simple key: value
-        #   ? not a simple key:
-        #   : { flow simple key: value }
-        # We emit the KEY token before all keys, so when we find a potential
-        # simple key, we try to locate the corresponding ':' indicator.
-        # Simple keys should be limited to a single line and 1024 characters.
-
-        # Can a simple key start at the current position? A simple key may
-        # start:
-        # - at the beginning of the line, not counting indentation spaces
-        #       (in block context),
-        # - after '{', '[', ',' (in the flow context),
-        # - after '?', ':', '-' (in the block context).
-        # In the block context, this flag also signifies if a block collection
-        # may start at the current position.
-        self.allow_simple_key = True
-
-        # Keep track of possible simple keys. This is a dictionary. The key
-        # is `flow_level`; there can be no more that one possible simple key
-        # for each level. The value is a SimpleKey record:
-        #   (token_number, required, index, line, column, mark)
-        # A simple key may start with ALIAS, ANCHOR, TAG, SCALAR(flow),
-        # '[', or '{' tokens.
-        self.possible_simple_keys = {}
-
-    # Public methods.
-
-    def check_token(self, *choices):
-        # Check if the next token is one of the given types.
-        while self.need_more_tokens():
-            self.fetch_more_tokens()
-        if self.tokens:
-            if not choices:
-                return True
-            for choice in choices:
-                if isinstance(self.tokens[0], choice):
-                    return True
-        return False
-
-    def peek_token(self):
-        # Return the next token, but do not delete if from the queue.
-        while self.need_more_tokens():
-            self.fetch_more_tokens()
-        if self.tokens:
-            return self.tokens[0]
-
-    def get_token(self):
-        # Return the next token.
-        while self.need_more_tokens():
-            self.fetch_more_tokens()
-        if self.tokens:
-            self.tokens_taken += 1
-            return self.tokens.pop(0)
-
-    # Private methods.
-
-    def need_more_tokens(self):
-        if self.done:
-            return False
-        if not self.tokens:
-            return True
-        # The current token may be a potential simple key, so we
-        # need to look further.
-        self.stale_possible_simple_keys()
-        if self.next_possible_simple_key() == self.tokens_taken:
-            return True
-
-    def fetch_more_tokens(self):
-
-        # Eat whitespaces and comments until we reach the next token.
-        self.scan_to_next_token()
-
-        # Remove obsolete possible simple keys.
-        self.stale_possible_simple_keys()
-
-        # Compare the current indentation and column. It may add some tokens
-        # and decrease the current indentation level.
-        self.unwind_indent(self.column)
-
-        # Peek the next character.
-        ch = self.peek()
-
-        # Is it the end of stream?
-        if ch == u'\0':
-            return self.fetch_stream_end()
-
-        # Is it a directive?
-        if ch == u'%' and self.check_directive():
-            return self.fetch_directive()
-
-        # Is it the document start?
-        if ch == u'-' and self.check_document_start():
-            return self.fetch_document_start()
-
-        # Is it the document end?
-        if ch == u'.' and self.check_document_end():
-            return self.fetch_document_end()
-
-        # TODO: support for BOM within a stream.
-        #if ch == u'\uFEFF':
-        #    return self.fetch_bom()    <-- issue BOMToken
-
-        # Note: the order of the following checks is NOT significant.
-
-        # Is it the flow sequence start indicator?
-        if ch == u'[':
-            return self.fetch_flow_sequence_start()
-
-        # Is it the flow mapping start indicator?
-        if ch == u'{':
-            return self.fetch_flow_mapping_start()
-
-        # Is it the flow sequence end indicator?
-        if ch == u']':
-            return self.fetch_flow_sequence_end()
-
-        # Is it the flow mapping end indicator?
-        if ch == u'}':
-            return self.fetch_flow_mapping_end()
-
-        # Is it the flow entry indicator?
-        if ch == u',':
-            return self.fetch_flow_entry()
-
-        # Is it the block entry indicator?
-        if ch == u'-' and self.check_block_entry():
-            return self.fetch_block_entry()
-
-        # Is it the key indicator?
-        if ch == u'?' and self.check_key():
-            return self.fetch_key()
-
-        # Is it the value indicator?
-        if ch == u':' and self.check_value():
-            return self.fetch_value()
-
-        # Is it an alias?
-        if ch == u'*':
-            return self.fetch_alias()
-
-        # Is it an anchor?
-        if ch == u'&':
-            return self.fetch_anchor()
-
-        # Is it a tag?
-        if ch == u'!':
-            return self.fetch_tag()
-
-        # Is it a literal scalar?
-        if ch == u'|' and not self.flow_level:
-            return self.fetch_literal()
-
-        # Is it a folded scalar?
-        if ch == u'>' and not self.flow_level:
-            return self.fetch_folded()
-
-        # Is it a single quoted scalar?
-        if ch == u'\'':
-            return self.fetch_single()
-
-        # Is it a double quoted scalar?
-        if ch == u'\"':
-            return self.fetch_double()
-
-        # It must be a plain scalar then.
-        if self.check_plain():
-            return self.fetch_plain()
-
-        # No? It's an error. Let's produce a nice error message.
-        raise ScannerError("while scanning for the next token", None,
-                "found character %r that cannot start any token"
-                % ch.encode('utf-8'), self.get_mark())
-
-    # Simple keys treatment.
-
-    def next_possible_simple_key(self):
-        # Return the number of the nearest possible simple key. Actually we
-        # don't need to loop through the whole dictionary. We may replace it
-        # with the following code:
-        #   if not self.possible_simple_keys:
-        #       return None
-        #   return self.possible_simple_keys[
-        #           min(self.possible_simple_keys.keys())].token_number
-        min_token_number = None
-        for level in self.possible_simple_keys:
-            key = self.possible_simple_keys[level]
-            if min_token_number is None or key.token_number < min_token_number:
-                min_token_number = key.token_number
-        return min_token_number
-
-    def stale_possible_simple_keys(self):
-        # Remove entries that are no longer possible simple keys. According to
-        # the YAML specification, simple keys
-        # - should be limited to a single line,
-        # - should be no longer than 1024 characters.
-        # Disabling this procedure will allow simple keys of any length and
-        # height (may cause problems if indentation is broken though).
-        for level in self.possible_simple_keys.keys():
-            key = self.possible_simple_keys[level]
-            if key.line != self.line  \
-                    or self.index-key.index > 1024:
-                if key.required:
-                    raise ScannerError("while scanning a simple key", key.mark,
-                            "could not found expected ':'", self.get_mark())
-                del self.possible_simple_keys[level]
-
-    def save_possible_simple_key(self):
-        # The next token may start a simple key. We check if it's possible
-        # and save its position. This function is called for
-        #   ALIAS, ANCHOR, TAG, SCALAR(flow), '[', and '{'.
-
-        # Check if a simple key is required at the current position.
-        required = not self.flow_level and self.indent == self.column
-
-        # A simple key is required only if it is the first token in the current
-        # line. Therefore it is always allowed.
-        assert self.allow_simple_key or not required
-
-        # The next token might be a simple key. Let's save it's number and
-        # position.
-        if self.allow_simple_key:
-            self.remove_possible_simple_key()
-            token_number = self.tokens_taken+len(self.tokens)
-            key = SimpleKey(token_number, required,
-                    self.index, self.line, self.column, self.get_mark())
-            self.possible_simple_keys[self.flow_level] = key
-
-    def remove_possible_simple_key(self):
-        # Remove the saved possible key position at the current flow level.
-        if self.flow_level in self.possible_simple_keys:
-            key = self.possible_simple_keys[self.flow_level]
-            
-            if key.required:
-                raise ScannerError("while scanning a simple key", key.mark,
-                        "could not found expected ':'", self.get_mark())
-
-            del self.possible_simple_keys[self.flow_level]
-
-    # Indentation functions.
-
-    def unwind_indent(self, column):
-
-        ## In flow context, tokens should respect indentation.
-        ## Actually the condition should be `self.indent >= column` according to
-        ## the spec. But this condition will prohibit intuitively correct
-        ## constructions such as
-        ## key : {
-        ## }
-        #if self.flow_level and self.indent > column:
-        #    raise ScannerError(None, None,
-        #            "invalid intendation or unclosed '[' or '{'",
-        #            self.get_mark())
-
-        # In the flow context, indentation is ignored. We make the scanner less
-        # restrictive then specification requires.
-        if self.flow_level:
-            return
-
-        # In block context, we may need to issue the BLOCK-END tokens.
-        while self.indent > column:
-            mark = self.get_mark()
-            self.indent = self.indents.pop()
-            self.tokens.append(BlockEndToken(mark, mark))
-
-    def add_indent(self, column):
-        # Check if we need to increase indentation.
-        if self.indent < column:
-            self.indents.append(self.indent)
-            self.indent = column
-            return True
-        return False
-
-    # Fetchers.
-
-    def fetch_stream_start(self):
-        # We always add STREAM-START as the first token and STREAM-END as the
-        # last token.
-
-        # Read the token.
-        mark = self.get_mark()
-        
-        # Add STREAM-START.
-        self.tokens.append(StreamStartToken(mark, mark,
-            encoding=self.encoding))
-        
-
-    def fetch_stream_end(self):
-
-        # Set the current intendation to -1.
-        self.unwind_indent(-1)
-
-        # Reset simple keys.
-        self.remove_possible_simple_key()
-        self.allow_simple_key = False
-        self.possible_simple_keys = {}
-
-        # Read the token.
-        mark = self.get_mark()
-        
-        # Add STREAM-END.
-        self.tokens.append(StreamEndToken(mark, mark))
-
-        # The steam is finished.
-        self.done = True
-
-    def fetch_directive(self):
-        
-        # Set the current intendation to -1.
-        self.unwind_indent(-1)
-
-        # Reset simple keys.
-        self.remove_possible_simple_key()
-        self.allow_simple_key = False
-
-        # Scan and add DIRECTIVE.
-        self.tokens.append(self.scan_directive())
-
-    def fetch_document_start(self):
-        self.fetch_document_indicator(DocumentStartToken)
-
-    def fetch_document_end(self):
-        self.fetch_document_indicator(DocumentEndToken)
-
-    def fetch_document_indicator(self, TokenClass):
-
-        # Set the current intendation to -1.
-        self.unwind_indent(-1)
-
-        # Reset simple keys. Note that there could not be a block collection
-        # after '---'.
-        self.remove_possible_simple_key()
-        self.allow_simple_key = False
-
-        # Add DOCUMENT-START or DOCUMENT-END.
-        start_mark = self.get_mark()
-        self.forward(3)
-        end_mark = self.get_mark()
-        self.tokens.append(TokenClass(start_mark, end_mark))
-
-    def fetch_flow_sequence_start(self):
-        self.fetch_flow_collection_start(FlowSequenceStartToken)
-
-    def fetch_flow_mapping_start(self):
-        self.fetch_flow_collection_start(FlowMappingStartToken)
-
-    def fetch_flow_collection_start(self, TokenClass):
-
-        # '[' and '{' may start a simple key.
-        self.save_possible_simple_key()
-
-        # Increase the flow level.
-        self.flow_level += 1
-
-        # Simple keys are allowed after '[' and '{'.
-        self.allow_simple_key = True
-
-        # Add FLOW-SEQUENCE-START or FLOW-MAPPING-START.
-        start_mark = self.get_mark()
-        self.forward()
-        end_mark = self.get_mark()
-        self.tokens.append(TokenClass(start_mark, end_mark))
-
-    def fetch_flow_sequence_end(self):
-        self.fetch_flow_collection_end(FlowSequenceEndToken)
-
-    def fetch_flow_mapping_end(self):
-        self.fetch_flow_collection_end(FlowMappingEndToken)
-
-    def fetch_flow_collection_end(self, TokenClass):
-
-        # Reset possible simple key on the current level.
-        self.remove_possible_simple_key()
-
-        # Decrease the flow level.
-        self.flow_level -= 1
-
-        # No simple keys after ']' or '}'.
-        self.allow_simple_key = False
-
-        # Add FLOW-SEQUENCE-END or FLOW-MAPPING-END.
-        start_mark = self.get_mark()
-        self.forward()
-        end_mark = self.get_mark()
-        self.tokens.append(TokenClass(start_mark, end_mark))
-
-    def fetch_flow_entry(self):
-
-        # Simple keys are allowed after ','.
-        self.allow_simple_key = True
-
-        # Reset possible simple key on the current level.
-        self.remove_possible_simple_key()
-
-        # Add FLOW-ENTRY.
-        start_mark = self.get_mark()
-        self.forward()
-        end_mark = self.get_mark()
-        self.tokens.append(FlowEntryToken(start_mark, end_mark))
-
-    def fetch_block_entry(self):
-
-        # Block context needs additional checks.
-        if not self.flow_level:
-
-            # Are we allowed to start a new entry?
-            if not self.allow_simple_key:
-                raise ScannerError(None, None,
-                        "sequence entries are not allowed here",
-                        self.get_mark())
-
-            # We may need to add BLOCK-SEQUENCE-START.
-            if self.add_indent(self.column):
-                mark = self.get_mark()
-                self.tokens.append(BlockSequenceStartToken(mark, mark))
-
-        # It's an error for the block entry to occur in the flow context,
-        # but we let the parser detect this.
-        else:
-            pass
-
-        # Simple keys are allowed after '-'.
-        self.allow_simple_key = True
-
-        # Reset possible simple key on the current level.
-        self.remove_possible_simple_key()
-
-        # Add BLOCK-ENTRY.
-        start_mark = self.get_mark()
-        self.forward()
-        end_mark = self.get_mark()
-        self.tokens.append(BlockEntryToken(start_mark, end_mark))
-
-    def fetch_key(self):
-        
-        # Block context needs additional checks.
-        if not self.flow_level:
-
-            # Are we allowed to start a key (not nessesary a simple)?
-            if not self.allow_simple_key:
-                raise ScannerError(None, None,
-                        "mapping keys are not allowed here",
-                        self.get_mark())
-
-            # We may need to add BLOCK-MAPPING-START.
-            if self.add_indent(self.column):
-                mark = self.get_mark()
-                self.tokens.append(BlockMappingStartToken(mark, mark))
-
-        # Simple keys are allowed after '?' in the block context.
-        self.allow_simple_key = not self.flow_level
-
-        # Reset possible simple key on the current level.
-        self.remove_possible_simple_key()
-
-        # Add KEY.
-        start_mark = self.get_mark()
-        self.forward()
-        end_mark = self.get_mark()
-        self.tokens.append(KeyToken(start_mark, end_mark))
-
-    def fetch_value(self):
-
-        # Do we determine a simple key?
-        if self.flow_level in self.possible_simple_keys:
-
-            # Add KEY.
-            key = self.possible_simple_keys[self.flow_level]
-            del self.possible_simple_keys[self.flow_level]
-            self.tokens.insert(key.token_number-self.tokens_taken,
-                    KeyToken(key.mark, key.mark))
-
-            # If this key starts a new block mapping, we need to add
-            # BLOCK-MAPPING-START.
-            if not self.flow_level:
-                if self.add_indent(key.column):
-                    self.tokens.insert(key.token_number-self.tokens_taken,
-                            BlockMappingStartToken(key.mark, key.mark))
-
-            # There cannot be two simple keys one after another.
-            self.allow_simple_key = False
-
-        # It must be a part of a complex key.
-        else:
-            
-            # Block context needs additional checks.
-            # (Do we really need them? They will be catched by the parser
-            # anyway.)
-            if not self.flow_level:
-
-                # We are allowed to start a complex value if and only if
-                # we can start a simple key.
-                if not self.allow_simple_key:
-                    raise ScannerError(None, None,
-                            "mapping values are not allowed here",
-                            self.get_mark())
-
-            # If this value starts a new block mapping, we need to add
-            # BLOCK-MAPPING-START.  It will be detected as an error later by
-            # the parser.
-            if not self.flow_level:
-                if self.add_indent(self.column):
-                    mark = self.get_mark()
-                    self.tokens.append(BlockMappingStartToken(mark, mark))
-
-            # Simple keys are allowed after ':' in the block context.
-            self.allow_simple_key = not self.flow_level
-
-            # Reset possible simple key on the current level.
-            self.remove_possible_simple_key()
-
-        # Add VALUE.
-        start_mark = self.get_mark()
-        self.forward()
-        end_mark = self.get_mark()
-        self.tokens.append(ValueToken(start_mark, end_mark))
-
-    def fetch_alias(self):
-
-        # ALIAS could be a simple key.
-        self.save_possible_simple_key()
-
-        # No simple keys after ALIAS.
-        self.allow_simple_key = False
-
-        # Scan and add ALIAS.
-        self.tokens.append(self.scan_anchor(AliasToken))
-
-    def fetch_anchor(self):
-
-        # ANCHOR could start a simple key.
-        self.save_possible_simple_key()
-
-        # No simple keys after ANCHOR.
-        self.allow_simple_key = False
-
-        # Scan and add ANCHOR.
-        self.tokens.append(self.scan_anchor(AnchorToken))
-
-    def fetch_tag(self):
-
-        # TAG could start a simple key.
-        self.save_possible_simple_key()
-
-        # No simple keys after TAG.
-        self.allow_simple_key = False
-
-        # Scan and add TAG.
-        self.tokens.append(self.scan_tag())
-
-    def fetch_literal(self):
-        self.fetch_block_scalar(style='|')
-
-    def fetch_folded(self):
-        self.fetch_block_scalar(style='>')
-
-    def fetch_block_scalar(self, style):
-
-        # A simple key may follow a block scalar.
-        self.allow_simple_key = True
-
-        # Reset possible simple key on the current level.
-        self.remove_possible_simple_key()
-
-        # Scan and add SCALAR.
-        self.tokens.append(self.scan_block_scalar(style))
-
-    def fetch_single(self):
-        self.fetch_flow_scalar(style='\'')
-
-    def fetch_double(self):
-        self.fetch_flow_scalar(style='"')
-
-    def fetch_flow_scalar(self, style):
-
-        # A flow scalar could be a simple key.
-        self.save_possible_simple_key()
-
-        # No simple keys after flow scalars.
-        self.allow_simple_key = False
-
-        # Scan and add SCALAR.
-        self.tokens.append(self.scan_flow_scalar(style))
-
-    def fetch_plain(self):
-
-        # A plain scalar could be a simple key.
-        self.save_possible_simple_key()
-
-        # No simple keys after plain scalars. But note that `scan_plain` will
-        # change this flag if the scan is finished at the beginning of the
-        # line.
-        self.allow_simple_key = False
-
-        # Scan and add SCALAR. May change `allow_simple_key`.
-        self.tokens.append(self.scan_plain())
-
-    # Checkers.
-
-    def check_directive(self):
-
-        # DIRECTIVE:        ^ '%' ...
-        # The '%' indicator is already checked.
-        if self.column == 0:
-            return True
-
-    def check_document_start(self):
-
-        # DOCUMENT-START:   ^ '---' (' '|'\n')
-        if self.column == 0:
-            if self.prefix(3) == u'---'  \
-                    and self.peek(3) in u'\0 \t\r\n\x85\u2028\u2029':
-                return True
-
-    def check_document_end(self):
-
-        # DOCUMENT-END:     ^ '...' (' '|'\n')
-        if self.column == 0:
-            if self.prefix(3) == u'...'  \
-                    and self.peek(3) in u'\0 \t\r\n\x85\u2028\u2029':
-                return True
-
-    def check_block_entry(self):
-
-        # BLOCK-ENTRY:      '-' (' '|'\n')
-        return self.peek(1) in u'\0 \t\r\n\x85\u2028\u2029'
-
-    def check_key(self):
-
-        # KEY(flow context):    '?'
-        if self.flow_level:
-            return True
-
-        # KEY(block context):   '?' (' '|'\n')
-        else:
-            return self.peek(1) in u'\0 \t\r\n\x85\u2028\u2029'
-
-    def check_value(self):
-
-        # VALUE(flow context):  ':'
-        if self.flow_level:
-            return True
-
-        # VALUE(block context): ':' (' '|'\n')
-        else:
-            return self.peek(1) in u'\0 \t\r\n\x85\u2028\u2029'
-
-    def check_plain(self):
-
-        # A plain scalar may start with any non-space character except:
-        #   '-', '?', ':', ',', '[', ']', '{', '}',
-        #   '#', '&', '*', '!', '|', '>', '\'', '\"',
-        #   '%', '@', '`'.
-        #
-        # It may also start with
-        #   '-', '?', ':'
-        # if it is followed by a non-space character.
-        #
-        # Note that we limit the last rule to the block context (except the
-        # '-' character) because we want the flow context to be space
-        # independent.
-        ch = self.peek()
-        return ch not in u'\0 \t\r\n\x85\u2028\u2029-?:,[]{}#&*!|>\'\"%@`'  \
-                or (self.peek(1) not in u'\0 \t\r\n\x85\u2028\u2029'
-                        and (ch == u'-' or (not self.flow_level and ch in u'?:')))
-
-    # Scanners.
-
-    def scan_to_next_token(self):
-        # We ignore spaces, line breaks and comments.
-        # If we find a line break in the block context, we set the flag
-        # `allow_simple_key` on.
-        # The byte order mark is stripped if it's the first character in the
-        # stream. We do not yet support BOM inside the stream as the
-        # specification requires. Any such mark will be considered as a part
-        # of the document.
-        #
-        # TODO: We need to make tab handling rules more sane. A good rule is
-        #   Tabs cannot precede tokens
-        #   BLOCK-SEQUENCE-START, BLOCK-MAPPING-START, BLOCK-END,
-        #   KEY(block), VALUE(block), BLOCK-ENTRY
-        # So the checking code is
-        #   if <TAB>:
-        #       self.allow_simple_keys = False
-        # We also need to add the check for `allow_simple_keys == True` to
-        # `unwind_indent` before issuing BLOCK-END.
-        # Scanners for block, flow, and plain scalars need to be modified.
-
-        if self.index == 0 and self.peek() == u'\uFEFF':
-            self.forward()
-        found = False
-        while not found:
-            while self.peek() == u' ':
-                self.forward()
-            if self.peek() == u'#':
-                while self.peek() not in u'\0\r\n\x85\u2028\u2029':
-                    self.forward()
-            if self.scan_line_break():
-                if not self.flow_level:
-                    self.allow_simple_key = True
-            else:
-                found = True
-
-    def scan_directive(self):
-        # See the specification for details.
-        start_mark = self.get_mark()
-        self.forward()
-        name = self.scan_directive_name(start_mark)
-        value = None
-        if name == u'YAML':
-            value = self.scan_yaml_directive_value(start_mark)
-            end_mark = self.get_mark()
-        elif name == u'TAG':
-            value = self.scan_tag_directive_value(start_mark)
-            end_mark = self.get_mark()
-        else:
-            end_mark = self.get_mark()
-            while self.peek() not in u'\0\r\n\x85\u2028\u2029':
-                self.forward()
-        self.scan_directive_ignored_line(start_mark)
-        return DirectiveToken(name, value, start_mark, end_mark)
-
-    def scan_directive_name(self, start_mark):
-        # See the specification for details.
-        length = 0
-        ch = self.peek(length)
-        while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'    \
-                or ch in u'-_':
-            length += 1
-            ch = self.peek(length)
-        if not length:
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected alphabetic or numeric character, but found %r"
-                    % ch.encode('utf-8'), self.get_mark())
-        value = self.prefix(length)
-        self.forward(length)
-        ch = self.peek()
-        if ch not in u'\0 \r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected alphabetic or numeric character, but found %r"
-                    % ch.encode('utf-8'), self.get_mark())
-        return value
-
-    def scan_yaml_directive_value(self, start_mark):
-        # See the specification for details.
-        while self.peek() == u' ':
-            self.forward()
-        major = self.scan_yaml_directive_number(start_mark)
-        if self.peek() != '.':
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected a digit or '.', but found %r"
-                    % self.peek().encode('utf-8'),
-                    self.get_mark())
-        self.forward()
-        minor = self.scan_yaml_directive_number(start_mark)
-        if self.peek() not in u'\0 \r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected a digit or ' ', but found %r"
-                    % self.peek().encode('utf-8'),
-                    self.get_mark())
-        return (major, minor)
-
-    def scan_yaml_directive_number(self, start_mark):
-        # See the specification for details.
-        ch = self.peek()
-        if not (u'0' <= ch <= u'9'):
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected a digit, but found %r" % ch.encode('utf-8'),
-                    self.get_mark())
-        length = 0
-        while u'0' <= self.peek(length) <= u'9':
-            length += 1
-        value = int(self.prefix(length))
-        self.forward(length)
-        return value
-
-    def scan_tag_directive_value(self, start_mark):
-        # See the specification for details.
-        while self.peek() == u' ':
-            self.forward()
-        handle = self.scan_tag_directive_handle(start_mark)
-        while self.peek() == u' ':
-            self.forward()
-        prefix = self.scan_tag_directive_prefix(start_mark)
-        return (handle, prefix)
-
-    def scan_tag_directive_handle(self, start_mark):
-        # See the specification for details.
-        value = self.scan_tag_handle('directive', start_mark)
-        ch = self.peek()
-        if ch != u' ':
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected ' ', but found %r" % ch.encode('utf-8'),
-                    self.get_mark())
-        return value
-
-    def scan_tag_directive_prefix(self, start_mark):
-        # See the specification for details.
-        value = self.scan_tag_uri('directive', start_mark)
-        ch = self.peek()
-        if ch not in u'\0 \r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected ' ', but found %r" % ch.encode('utf-8'),
-                    self.get_mark())
-        return value
-
-    def scan_directive_ignored_line(self, start_mark):
-        # See the specification for details.
-        while self.peek() == u' ':
-            self.forward()
-        if self.peek() == u'#':
-            while self.peek() not in u'\0\r\n\x85\u2028\u2029':
-                self.forward()
-        ch = self.peek()
-        if ch not in u'\0\r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a directive", start_mark,
-                    "expected a comment or a line break, but found %r"
-                        % ch.encode('utf-8'), self.get_mark())
-        self.scan_line_break()
-
-    def scan_anchor(self, TokenClass):
-        # The specification does not restrict characters for anchors and
-        # aliases. This may lead to problems, for instance, the document:
-        #   [ *alias, value ]
-        # can be interpteted in two ways, as
-        #   [ "value" ]
-        # and
-        #   [ *alias , "value" ]
-        # Therefore we restrict aliases to numbers and ASCII letters.
-        start_mark = self.get_mark()
-        indicator = self.peek()
-        if indicator == u'*':
-            name = 'alias'
-        else:
-            name = 'anchor'
-        self.forward()
-        length = 0
-        ch = self.peek(length)
-        while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'    \
-                or ch in u'-_':
-            length += 1
-            ch = self.peek(length)
-        if not length:
-            raise ScannerError("while scanning an %s" % name, start_mark,
-                    "expected alphabetic or numeric character, but found %r"
-                    % ch.encode('utf-8'), self.get_mark())
-        value = self.prefix(length)
-        self.forward(length)
-        ch = self.peek()
-        if ch not in u'\0 \t\r\n\x85\u2028\u2029?:,]}%@`':
-            raise ScannerError("while scanning an %s" % name, start_mark,
-                    "expected alphabetic or numeric character, but found %r"
-                    % ch.encode('utf-8'), self.get_mark())
-        end_mark = self.get_mark()
-        return TokenClass(value, start_mark, end_mark)
-
-    def scan_tag(self):
-        # See the specification for details.
-        start_mark = self.get_mark()
-        ch = self.peek(1)
-        if ch == u'<':
-            handle = None
-            self.forward(2)
-            suffix = self.scan_tag_uri('tag', start_mark)
-            if self.peek() != u'>':
-                raise ScannerError("while parsing a tag", start_mark,
-                        "expected '>', but found %r" % self.peek().encode('utf-8'),
-                        self.get_mark())
-            self.forward()
-        elif ch in u'\0 \t\r\n\x85\u2028\u2029':
-            handle = None
-            suffix = u'!'
-            self.forward()
-        else:
-            length = 1
-            use_handle = False
-            while ch not in u'\0 \r\n\x85\u2028\u2029':
-                if ch == u'!':
-                    use_handle = True
-                    break
-                length += 1
-                ch = self.peek(length)
-            handle = u'!'
-            if use_handle:
-                handle = self.scan_tag_handle('tag', start_mark)
-            else:
-                handle = u'!'
-                self.forward()
-            suffix = self.scan_tag_uri('tag', start_mark)
-        ch = self.peek()
-        if ch not in u'\0 \r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a tag", start_mark,
-                    "expected ' ', but found %r" % ch.encode('utf-8'),
-                    self.get_mark())
-        value = (handle, suffix)
-        end_mark = self.get_mark()
-        return TagToken(value, start_mark, end_mark)
-
-    def scan_block_scalar(self, style):
-        # See the specification for details.
-
-        if style == '>':
-            folded = True
-        else:
-            folded = False
-
-        chunks = []
-        start_mark = self.get_mark()
-
-        # Scan the header.
-        self.forward()
-        chomping, increment = self.scan_block_scalar_indicators(start_mark)
-        self.scan_block_scalar_ignored_line(start_mark)
-
-        # Determine the indentation level and go to the first non-empty line.
-        min_indent = self.indent+1
-        if min_indent < 1:
-            min_indent = 1
-        if increment is None:
-            breaks, max_indent, end_mark = self.scan_block_scalar_indentation()
-            indent = max(min_indent, max_indent)
-        else:
-            indent = min_indent+increment-1
-            breaks, end_mark = self.scan_block_scalar_breaks(indent)
-        line_break = u''
-
-        # Scan the inner part of the block scalar.
-        while self.column == indent and self.peek() != u'\0':
-            chunks.extend(breaks)
-            leading_non_space = self.peek() not in u' \t'
-            length = 0
-            while self.peek(length) not in u'\0\r\n\x85\u2028\u2029':
-                length += 1
-            chunks.append(self.prefix(length))
-            self.forward(length)
-            line_break = self.scan_line_break()
-            breaks, end_mark = self.scan_block_scalar_breaks(indent)
-            if self.column == indent and self.peek() != u'\0':
-
-                # Unfortunately, folding rules are ambiguous.
-                #
-                # This is the folding according to the specification:
-                
-                if folded and line_break == u'\n'   \
-                        and leading_non_space and self.peek() not in u' \t':
-                    if not breaks:
-                        chunks.append(u' ')
-                else:
-                    chunks.append(line_break)
-                
-                # This is Clark Evans's interpretation (also in the spec
-                # examples):
-                #
-                #if folded and line_break == u'\n':
-                #    if not breaks:
-                #        if self.peek() not in ' \t':
-                #            chunks.append(u' ')
-                #        else:
-                #            chunks.append(line_break)
-                #else:
-                #    chunks.append(line_break)
-            else:
-                break
-
-        # Chomp the tail.
-        if chomping is not False:
-            chunks.append(line_break)
-        if chomping is True:
-            chunks.extend(breaks)
-
-        # We are done.
-        return ScalarToken(u''.join(chunks), False, start_mark, end_mark,
-                style)
-
-    def scan_block_scalar_indicators(self, start_mark):
-        # See the specification for details.
-        chomping = None
-        increment = None
-        ch = self.peek()
-        if ch in u'+-':
-            if ch == '+':
-                chomping = True
-            else:
-                chomping = False
-            self.forward()
-            ch = self.peek()
-            if ch in u'0123456789':
-                increment = int(ch)
-                if increment == 0:
-                    raise ScannerError("while scanning a block scalar", start_mark,
-                            "expected indentation indicator in the range 1-9, but found 0",
-                            self.get_mark())
-                self.forward()
-        elif ch in u'0123456789':
-            increment = int(ch)
-            if increment == 0:
-                raise ScannerError("while scanning a block scalar", start_mark,
-                        "expected indentation indicator in the range 1-9, but found 0",
-                        self.get_mark())
-            self.forward()
-            ch = self.peek()
-            if ch in u'+-':
-                if ch == '+':
-                    chomping = True
-                else:
-                    chomping = False
-                self.forward()
-        ch = self.peek()
-        if ch not in u'\0 \r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a block scalar", start_mark,
-                    "expected chomping or indentation indicators, but found %r"
-                        % ch.encode('utf-8'), self.get_mark())
-        return chomping, increment
-
-    def scan_block_scalar_ignored_line(self, start_mark):
-        # See the specification for details.
-        while self.peek() == u' ':
-            self.forward()
-        if self.peek() == u'#':
-            while self.peek() not in u'\0\r\n\x85\u2028\u2029':
-                self.forward()
-        ch = self.peek()
-        if ch not in u'\0\r\n\x85\u2028\u2029':
-            raise ScannerError("while scanning a block scalar", start_mark,
-                    "expected a comment or a line break, but found %r"
-                        % ch.encode('utf-8'), self.get_mark())
-        self.scan_line_break()
-
-    def scan_block_scalar_indentation(self):
-        # See the specification for details.
-        chunks = []
-        max_indent = 0
-        end_mark = self.get_mark()
-        while self.peek() in u' \r\n\x85\u2028\u2029':
-            if self.peek() != u' ':
-                chunks.append(self.scan_line_break())
-                end_mark = self.get_mark()
-            else:
-                self.forward()
-                if self.column > max_indent:
-                    max_indent = self.column
-        return chunks, max_indent, end_mark
-
-    def scan_block_scalar_breaks(self, indent):
-        # See the specification for details.
-        chunks = []
-        end_mark = self.get_mark()
-        while self.column < indent and self.peek() == u' ':
-            self.forward()
-        while self.peek() in u'\r\n\x85\u2028\u2029':
-            chunks.append(self.scan_line_break())
-            end_mark = self.get_mark()
-            while self.column < indent and self.peek() == u' ':
-                self.forward()
-        return chunks, end_mark
-
-    def scan_flow_scalar(self, style):
-        # See the specification for details.
-        # Note that we loose indentation rules for quoted scalars. Quoted
-        # scalars don't need to adhere indentation because " and ' clearly
-        # mark the beginning and the end of them. Therefore we are less
-        # restrictive then the specification requires. We only need to check
-        # that document separators are not included in scalars.
-        if style == '"':
-            double = True
-        else:
-            double = False
-        chunks = []
-        start_mark = self.get_mark()
-        quote = self.peek()
-        self.forward()
-        chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
-        while self.peek() != quote:
-            chunks.extend(self.scan_flow_scalar_spaces(double, start_mark))
-            chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
-        self.forward()
-        end_mark = self.get_mark()
-        return ScalarToken(u''.join(chunks), False, start_mark, end_mark,
-                style)
-
-    ESCAPE_REPLACEMENTS = {
-        u'0':   u'\0',
-        u'a':   u'\x07',
-        u'b':   u'\x08',
-        u't':   u'\x09',
-        u'\t':  u'\x09',
-        u'n':   u'\x0A',
-        u'v':   u'\x0B',
-        u'f':   u'\x0C',
-        u'r':   u'\x0D',
-        u'e':   u'\x1B',
-        u' ':   u'\x20',
-        u'\"':  u'\"',
-        u'\\':  u'\\',
-        u'N':   u'\x85',
-        u'_':   u'\xA0',
-        u'L':   u'\u2028',
-        u'P':   u'\u2029',
-    }
-
-    ESCAPE_CODES = {
-        u'x':   2,
-        u'u':   4,
-        u'U':   8,
-    }
-
-    def scan_flow_scalar_non_spaces(self, double, start_mark):
-        # See the specification for details.
-        chunks = []
-        while True:
-            length = 0
-            while self.peek(length) not in u'\'\"\\\0 \t\r\n\x85\u2028\u2029':
-                length += 1
-            if length:
-                chunks.append(self.prefix(length))
-                self.forward(length)
-            ch = self.peek()
-            if not double and ch == u'\'' and self.peek(1) == u'\'':
-                chunks.append(u'\'')
-                self.forward(2)
-            elif (double and ch == u'\'') or (not double and ch in u'\"\\'):
-                chunks.append(ch)
-                self.forward()
-            elif double and ch == u'\\':
-                self.forward()
-                ch = self.peek()
-                if ch in self.ESCAPE_REPLACEMENTS:
-                    chunks.append(self.ESCAPE_REPLACEMENTS[ch])
-                    self.forward()
-                elif ch in self.ESCAPE_CODES:
-                    length = self.ESCAPE_CODES[ch]
-                    self.forward()
-                    for k in range(length):
-                        if self.peek(k) not in u'0123456789ABCDEFabcdef':
-                            raise ScannerError("while scanning a double-quoted scalar", start_mark,
-                                    "expected escape sequence of %d hexdecimal numbers, but found %r" %
-                                        (length, self.peek(k).encode('utf-8')), self.get_mark())
-                    code = int(self.prefix(length), 16)
-                    chunks.append(unichr(code))
-                    self.forward(length)
-                elif ch in u'\r\n\x85\u2028\u2029':
-                    self.scan_line_break()
-                    chunks.extend(self.scan_flow_scalar_breaks(double, start_mark))
-                else:
-                    raise ScannerError("while scanning a double-quoted scalar", start_mark,
-                            "found unknown escape character %r" % ch.encode('utf-8'), self.get_mark())
-            else:
-                return chunks
-
-    def scan_flow_scalar_spaces(self, double, start_mark):
-        # See the specification for details.
-        chunks = []
-        length = 0
-        while self.peek(length) in u' \t':
-            length += 1
-        whitespaces = self.prefix(length)
-        self.forward(length)
-        ch = self.peek()
-        if ch == u'\0':
-            raise ScannerError("while scanning a quoted scalar", start_mark,
-                    "found unexpected end of stream", self.get_mark())
-        elif ch in u'\r\n\x85\u2028\u2029':
-            line_break = self.scan_line_break()
-            breaks = self.scan_flow_scalar_breaks(double, start_mark)
-            if line_break != u'\n':
-                chunks.append(line_break)
-            elif not breaks:
-                chunks.append(u' ')
-            chunks.extend(breaks)
-        else:
-            chunks.append(whitespaces)
-        return chunks
-
-    def scan_flow_scalar_breaks(self, double, start_mark):
-        # See the specification for details.
-        chunks = []
-        while True:
-            # Instead of checking indentation, we check for document
-            # separators.
-            prefix = self.prefix(3)
-            if (prefix == u'---' or prefix == u'...')   \
-                    and self.peek(3) in u'\0 \t\r\n\x85\u2028\u2029':
-                raise ScannerError("while scanning a quoted scalar", start_mark,
-                        "found unexpected document separator", self.get_mark())
-            while self.peek() in u' \t':
-                self.forward()
-            if self.peek() in u'\r\n\x85\u2028\u2029':
-                chunks.append(self.scan_line_break())
-            else:
-                return chunks
-
-    def scan_plain(self):
-        # See the specification for details.
-        # We add an additional restriction for the flow context:
-        #   plain scalars in the flow context cannot contain ',', ':' and '?'.
-        # We also keep track of the `allow_simple_key` flag here.
-        # Indentation rules are loosed for the flow context.
-        chunks = []
-        start_mark = self.get_mark()
-        end_mark = start_mark
-        indent = self.indent+1
-        # We allow zero indentation for scalars, but then we need to check for
-        # document separators at the beginning of the line.
-        #if indent == 0:
-        #    indent = 1
-        spaces = []
-        while True:
-            length = 0
-            if self.peek() == u'#':
-                break
-            while True:
-                ch = self.peek(length)
-                if ch in u'\0 \t\r\n\x85\u2028\u2029'   \
-                        or (not self.flow_level and ch == u':' and
-                                self.peek(length+1) in u'\0 \t\r\n\x85\u2028\u2029') \
-                        or (self.flow_level and ch in u',:?[]{}'):
-                    break
-                length += 1
-            # It's not clear what we should do with ':' in the flow context.
-            if (self.flow_level and ch == u':'
-                    and self.peek(length+1) not in u'\0 \t\r\n\x85\u2028\u2029,[]{}'):
-                self.forward(length)
-                raise ScannerError("while scanning a plain scalar", start_mark,
-                    "found unexpected ':'", self.get_mark(),
-                    "Please check http://pyyaml.org/wiki/YAMLColonInFlowContext for details.")
-            if length == 0:
-                break
-            self.allow_simple_key = False
-            chunks.extend(spaces)
-            chunks.append(self.prefix(length))
-            self.forward(length)
-            end_mark = self.get_mark()
-            spaces = self.scan_plain_spaces(indent, start_mark)
-            if not spaces or self.peek() == u'#' \
-                    or (not self.flow_level and self.column < indent):
-                break
-        return ScalarToken(u''.join(chunks), True, start_mark, end_mark)
-
-    def scan_plain_spaces(self, indent, start_mark):
-        # See the specification for details.
-        # The specification is really confusing about tabs in plain scalars.
-        # We just forbid them completely. Do not use tabs in YAML!
-        chunks = []
-        length = 0
-        while self.peek(length) in u' ':
-            length += 1
-        whitespaces = self.prefix(length)
-        self.forward(length)
-        ch = self.peek()
-        if ch in u'\r\n\x85\u2028\u2029':
-            line_break = self.scan_line_break()
-            self.allow_simple_key = True
-            prefix = self.prefix(3)
-            if (prefix == u'---' or prefix == u'...')   \
-                    and self.peek(3) in u'\0 \t\r\n\x85\u2028\u2029':
-                return
-            breaks = []
-            while self.peek() in u' \r\n\x85\u2028\u2029':
-                if self.peek() == ' ':
-                    self.forward()
-                else:
-                    breaks.append(self.scan_line_break())
-                    prefix = self.prefix(3)
-                    if (prefix == u'---' or prefix == u'...')   \
-                            and self.peek(3) in u'\0 \t\r\n\x85\u2028\u2029':
-                        return
-            if line_break != u'\n':
-                chunks.append(line_break)
-            elif not breaks:
-                chunks.append(u' ')
-            chunks.extend(breaks)
-        elif whitespaces:
-            chunks.append(whitespaces)
-        return chunks
-
-    def scan_tag_handle(self, name, start_mark):
-        # See the specification for details.
-        # For some strange reasons, the specification does not allow '_' in
-        # tag handles. I have allowed it anyway.
-        ch = self.peek()
-        if ch != u'!':
-            raise ScannerError("while scanning a %s" % name, start_mark,
-                    "expected '!', but found %r" % ch.encode('utf-8'),
-                    self.get_mark())
-        length = 1
-        ch = self.peek(length)
-        if ch != u' ':
-            while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'    \
-                    or ch in u'-_':
-                length += 1
-                ch = self.peek(length)
-            if ch != u'!':
-                self.forward(length)
-                raise ScannerError("while scanning a %s" % name, start_mark,
-                        "expected '!', but found %r" % ch.encode('utf-8'),
-                        self.get_mark())
-            length += 1
-        value = self.prefix(length)
-        self.forward(length)
-        return value
-
-    def scan_tag_uri(self, name, start_mark):
-        # See the specification for details.
-        # Note: we do not check if URI is well-formed.
-        chunks = []
-        length = 0
-        ch = self.peek(length)
-        while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z'    \
-                or ch in u'-;/?:@&=+$,_.!~*\'()[]%':
-            if ch == u'%':
-                chunks.append(self.prefix(length))
-                self.forward(length)
-                length = 0
-                chunks.append(self.scan_uri_escapes(name, start_mark))
-            else:
-                length += 1
-            ch = self.peek(length)
-        if length:
-            chunks.append(self.prefix(length))
-            self.forward(length)
-            length = 0
-        if not chunks:
-            raise ScannerError("while parsing a %s" % name, start_mark,
-                    "expected URI, but found %r" % ch.encode('utf-8'),
-                    self.get_mark())
-        return u''.join(chunks)
-
-    def scan_uri_escapes(self, name, start_mark):
-        # See the specification for details.
-        bytes = []
-        mark = self.get_mark()
-        while self.peek() == u'%':
-            self.forward()
-            for k in range(2):
-                if self.peek(k) not in u'0123456789ABCDEFabcdef':
-                    raise ScannerError("while scanning a %s" % name, start_mark,
-                            "expected URI escape sequence of 2 hexdecimal numbers, but found %r" %
-                                (self.peek(k).encode('utf-8')), self.get_mark())
-            bytes.append(chr(int(self.prefix(2), 16)))
-            self.forward(2)
-        try:
-            value = unicode(''.join(bytes), 'utf-8')
-        except UnicodeDecodeError, exc:
-            raise ScannerError("while scanning a %s" % name, start_mark, str(exc), mark)
-        return value
-
-    def scan_line_break(self):
-        # Transforms:
-        #   '\r\n'      :   '\n'
-        #   '\r'        :   '\n'
-        #   '\n'        :   '\n'
-        #   '\x85'      :   '\n'
-        #   '\u2028'    :   '\u2028'
-        #   '\u2029     :   '\u2029'
-        #   default     :   ''
-        ch = self.peek()
-        if ch in u'\r\n\x85':
-            if self.prefix(2) == u'\r\n':
-                self.forward(2)
-            else:
-                self.forward()
-            return u'\n'
-        elif ch in u'\u2028\u2029':
-            self.forward()
-            return ch
-        return u''
-
-#try:
-#    import psyco
-#    psyco.bind(Scanner)
-#except ImportError:
-#    pass
-
diff --git a/tablib/packages/yaml/serializer.py b/tablib/packages/yaml/serializer.py
deleted file mode 100644
index 0bf1e96..0000000
--- a/tablib/packages/yaml/serializer.py
+++ /dev/null
@@ -1,111 +0,0 @@
-
-__all__ = ['Serializer', 'SerializerError']
-
-from error import YAMLError
-from events import *
-from nodes import *
-
-class SerializerError(YAMLError):
-    pass
-
-class Serializer(object):
-
-    ANCHOR_TEMPLATE = u'id%03d'
-
-    def __init__(self, encoding=None,
-            explicit_start=None, explicit_end=None, version=None, tags=None):
-        self.use_encoding = encoding
-        self.use_explicit_start = explicit_start
-        self.use_explicit_end = explicit_end
-        self.use_version = version
-        self.use_tags = tags
-        self.serialized_nodes = {}
-        self.anchors = {}
-        self.last_anchor_id = 0
-        self.closed = None
-
-    def open(self):
-        if self.closed is None:
-            self.emit(StreamStartEvent(encoding=self.use_encoding))
-            self.closed = False
-        elif self.closed:
-            raise SerializerError("serializer is closed")
-        else:
-            raise SerializerError("serializer is already opened")
-
-    def close(self):
-        if self.closed is None:
-            raise SerializerError("serializer is not opened")
-        elif not self.closed:
-            self.emit(StreamEndEvent())
-            self.closed = True
-
-    #def __del__(self):
-    #    self.close()
-
-    def serialize(self, node):
-        if self.closed is None:
-            raise SerializerError("serializer is not opened")
-        elif self.closed:
-            raise SerializerError("serializer is closed")
-        self.emit(DocumentStartEvent(explicit=self.use_explicit_start,
-            version=self.use_version, tags=self.use_tags))
-        self.anchor_node(node)
-        self.serialize_node(node, None, None)
-        self.emit(DocumentEndEvent(explicit=self.use_explicit_end))
-        self.serialized_nodes = {}
-        self.anchors = {}
-        self.last_anchor_id = 0
-
-    def anchor_node(self, node):
-        if node in self.anchors:
-            if self.anchors[node] is None:
-                self.anchors[node] = self.generate_anchor(node)
-        else:
-            self.anchors[node] = None
-            if isinstance(node, SequenceNode):
-                for item in node.value:
-                    self.anchor_node(item)
-            elif isinstance(node, MappingNode):
-                for key, value in node.value:
-                    self.anchor_node(key)
-                    self.anchor_node(value)
-
-    def generate_anchor(self, node):
-        self.last_anchor_id += 1
-        return self.ANCHOR_TEMPLATE % self.last_anchor_id
-
-    def serialize_node(self, node, parent, index):
-        alias = self.anchors[node]
-        if node in self.serialized_nodes:
-            self.emit(AliasEvent(alias))
-        else:
-            self.serialized_nodes[node] = True
-            self.descend_resolver(parent, index)
-            if isinstance(node, ScalarNode):
-                detected_tag = self.resolve(ScalarNode, node.value, (True, False))
-                default_tag = self.resolve(ScalarNode, node.value, (False, True))
-                implicit = (node.tag == detected_tag), (node.tag == default_tag)
-                self.emit(ScalarEvent(alias, node.tag, implicit, node.value,
-                    style=node.style))
-            elif isinstance(node, SequenceNode):
-                implicit = (node.tag
-                            == self.resolve(SequenceNode, node.value, True))
-                self.emit(SequenceStartEvent(alias, node.tag, implicit,
-                    flow_style=node.flow_style))
-                index = 0
-                for item in node.value:
-                    self.serialize_node(item, node, index)
-                    index += 1
-                self.emit(SequenceEndEvent())
-            elif isinstance(node, MappingNode):
-                implicit = (node.tag
-                            == self.resolve(MappingNode, node.value, True))
-                self.emit(MappingStartEvent(alias, node.tag, implicit,
-                    flow_style=node.flow_style))
-                for key, value in node.value:
-                    self.serialize_node(key, node, None)
-                    self.serialize_node(value, node, key)
-                self.emit(MappingEndEvent())
-            self.ascend_resolver()
-
diff --git a/tablib/packages/yaml/tokens.py b/tablib/packages/yaml/tokens.py
deleted file mode 100644
index 4d0b48a..0000000
--- a/tablib/packages/yaml/tokens.py
+++ /dev/null
@@ -1,104 +0,0 @@
-
-class Token(object):
-    def __init__(self, start_mark, end_mark):
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-    def __repr__(self):
-        attributes = [key for key in self.__dict__
-                if not key.endswith('_mark')]
-        attributes.sort()
-        arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
-                for key in attributes])
-        return '%s(%s)' % (self.__class__.__name__, arguments)
-
-#class BOMToken(Token):
-#    id = '<byte order mark>'
-
-class DirectiveToken(Token):
-    id = '<directive>'
-    def __init__(self, name, value, start_mark, end_mark):
-        self.name = name
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-
-class DocumentStartToken(Token):
-    id = '<document start>'
-
-class DocumentEndToken(Token):
-    id = '<document end>'
-
-class StreamStartToken(Token):
-    id = '<stream start>'
-    def __init__(self, start_mark=None, end_mark=None,
-            encoding=None):
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.encoding = encoding
-
-class StreamEndToken(Token):
-    id = '<stream end>'
-
-class BlockSequenceStartToken(Token):
-    id = '<block sequence start>'
-
-class BlockMappingStartToken(Token):
-    id = '<block mapping start>'
-
-class BlockEndToken(Token):
-    id = '<block end>'
-
-class FlowSequenceStartToken(Token):
-    id = '['
-
-class FlowMappingStartToken(Token):
-    id = '{'
-
-class FlowSequenceEndToken(Token):
-    id = ']'
-
-class FlowMappingEndToken(Token):
-    id = '}'
-
-class KeyToken(Token):
-    id = '?'
-
-class ValueToken(Token):
-    id = ':'
-
-class BlockEntryToken(Token):
-    id = '-'
-
-class FlowEntryToken(Token):
-    id = ','
-
-class AliasToken(Token):
-    id = '<alias>'
-    def __init__(self, value, start_mark, end_mark):
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-
-class AnchorToken(Token):
-    id = '<anchor>'
-    def __init__(self, value, start_mark, end_mark):
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-
-class TagToken(Token):
-    id = '<tag>'
-    def __init__(self, value, start_mark, end_mark):
-        self.value = value
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-
-class ScalarToken(Token):
-    id = '<scalar>'
-    def __init__(self, value, plain, start_mark, end_mark, style=None):
-        self.value = value
-        self.plain = plain
-        self.start_mark = start_mark
-        self.end_mark = end_mark
-        self.style = style
-