Make pylint happier

11 files changed, 65 insertions, 48 deletions

diff --git a/flake8/__init__.py b/flake8/__init__.py
index a6520e4..996f036 100644
--- a/flake8/__init__.py
+++ b/flake8/__init__.py
@@ -10,8 +10,6 @@ This module
 
 """
 import logging
-import sys
-
 try:
     from logging import NullHandler
 except ImportError:
@@ -21,6 +19,7 @@ except ImportError:
         def emit(self, record):
             """Do nothing."""
             pass
+import sys
 
 LOG = logging.getLogger(__name__)
 LOG.addHandler(NullHandler())
@@ -51,7 +50,6 @@ def configure_logging(verbosity, filename=None,
         If the name is "stdout" or "stderr" this will log to the appropriate
         stream.
     """
-    global LOG
     if verbosity <= 0:
         return
     if verbosity > 2:
@@ -60,12 +58,14 @@ def configure_logging(verbosity, filename=None,
     log_level = _VERBOSITY_TO_LOG_LEVEL[verbosity]
 
     if not filename or filename in ('stderr', 'stdout'):
-        handler = logging.StreamHandler(getattr(sys, filename))
+        fileobj = getattr(sys, filename or 'stderr')
+        handler = logging.StreamHandler
     else:
-        handler = logging.FileHandler(filename)
+        fileobj = filename
+        handler = logging.FileHandler
 
     handler.setFormatter(logging.Formatter(logformat))
-    LOG.addHandler(handler)
+    LOG.addHandler(handler(fileobj))
     LOG.setLevel(log_level)
     LOG.debug('Added a %s logging handler to logger root at %s',
               filename, __name__)
diff --git a/flake8/formatting/default.py b/flake8/formatting/default.py
index e0686a0..bef8c88 100644
--- a/flake8/formatting/default.py
+++ b/flake8/formatting/default.py
@@ -18,6 +18,8 @@ class SimpleFormatter(base.BaseFormatter):
 
     """
 
+    error_format = None
+
     def format(self, error):
         """Format and write error out.
 
diff --git a/flake8/main/cli.py b/flake8/main/cli.py
index 183b951..c9503f1 100644
--- a/flake8/main/cli.py
+++ b/flake8/main/cli.py
@@ -174,10 +174,11 @@ def main(argv=None):
 
     # Parse out our options from our found config files and user-provided CLI
     # options
-    options, args = aggregator.aggregate_options(option_manager)
-
-    # formatter = formatting_plugins.get(
-    #     options.format, formatting_plugins['default']
-    # ).execute(options)
-    # listener_trie = listening_plugins.build_notifier()
-    # guide = style_guide.StyleGuide(options, args, listener_trie, formatter)
+    options, args = aggregator.aggregate_options(option_manager, argv)
+
+    formatter = formatting_plugins.get(
+        options.format, formatting_plugins['default']
+    ).execute(options)
+    listener_trie = listening_plugins.build_notifier()
+    guide = style_guide.StyleGuide(options, args, listener_trie, formatter)
+    guide.handle_error('E111', 'stdin', 1, 1, 'faketext')
diff --git a/flake8/options/aggregator.py b/flake8/options/aggregator.py
index 5c02730..b344cf0 100644
--- a/flake8/options/aggregator.py
+++ b/flake8/options/aggregator.py
@@ -71,5 +71,4 @@ def aggregate_options(manager, arglist=None, values=None):
         setattr(default_values, dest_name, value)
 
     # Finally parse the command-line options
-    final_values, args = manager.parse_args(arglist, default_values)
-    return final_values, args
+    return manager.parse_args(arglist, default_values)
diff --git a/flake8/options/config.py b/flake8/options/config.py
index 2484cdd..ecc40f7 100644
--- a/flake8/options/config.py
+++ b/flake8/options/config.py
@@ -66,7 +66,7 @@ class ConfigFileFinder(object):
             LOG.debug('Found cli configuration files: %s', found_files)
         return config
 
-    def generate_possible_local_config_files(self):
+    def generate_possible_local_files(self):
         """Find and generate all local config files."""
         tail = self.tail
         parent = self.parent
@@ -84,7 +84,7 @@ class ConfigFileFinder(object):
         """Find all local config files which actually exist.
 
         Filter results from
-        :meth:`~ConfigFileFinder.generate_possible_local_config_files` based
+        :meth:`~ConfigFileFinder.generate_possible_local_files` based
         on whether the filename exists or not.
 
         :returns:
@@ -93,11 +93,12 @@ class ConfigFileFinder(object):
         :rtype:
             [str]
         """
+        exists = os.path.exists
         return [
             filename
-            for filename in self.generate_possible_local_config_files()
+            for filename in self.generate_possible_local_files()
             if os.path.exists(filename)
-        ] + list(filter(os.path.exists, self.extra_config_files))
+        ] + [f for f in self.extra_config_files if exists(f)]
 
     def local_configs(self):
         """Parse all local config files into one config object."""
diff --git a/flake8/options/manager.py b/flake8/options/manager.py
index 9faaf7c..cb4c831 100644
--- a/flake8/options/manager.py
+++ b/flake8/options/manager.py
@@ -1,6 +1,6 @@
 """Option handling and Option management logic."""
 import logging
-import optparse
+import optparse  # pylint: disable=deprecated-module
 
 from flake8 import utils
 
@@ -18,8 +18,7 @@ class Option(object):
                  metavar=None,
                  # Options below here are specific to Flake8
                  parse_from_config=False, comma_separated_list=False,
-                 normalize_paths=False,
-                 ):
+                 normalize_paths=False):
         """Initialize an Option instance wrapping optparse.Option.
 
         The following are all passed directly through to optparse.
@@ -69,12 +68,17 @@ class Option(object):
         """
         self.short_option_name = short_option_name
         self.long_option_name = long_option_name
-        self.option_args = filter(None, (short_option_name, long_option_name))
+        self.option_args = [
+            x for x in (short_option_name, long_option_name) if x is not None
+        ]
         self.option_kwargs = {
             'action': action,
             'default': default,
             'type': type,
             'dest': self._make_dest(dest),
+            'nargs': nargs,
+            'const': const,
+            'choices': choices,
             'callback': callback,
             'callback_args': callback_args,
             'callback_kwargs': callback_kwargs,
@@ -97,6 +101,8 @@ class Option(object):
                                  'a long_option_name must also be specified.')
             self.config_name = long_option_name[2:].replace('-', '_')
 
+        self._opt = None
+
     def __repr__(self):
         """Simple representation of an Option class."""
         return (
@@ -129,7 +135,7 @@ class Option(object):
 
     def to_optparse(self):
         """Convert a Flake8 Option to an optparse Option."""
-        if not hasattr(self, '_opt'):
+        if self._opt is None:
             self._opt = optparse.Option(*self.option_args,
                                         **self.option_kwargs)
         return self._opt
diff --git a/flake8/plugins/manager.py b/flake8/plugins/manager.py
index 3a20b91..21171ef 100644
--- a/flake8/plugins/manager.py
+++ b/flake8/plugins/manager.py
@@ -57,7 +57,7 @@ class Plugin(object):
 
     def execute(self, *args, **kwargs):
         r"""Call the plugin with \*args and \*\*kwargs."""
-        return self.plugin(*args, **kwargs)
+        return self.plugin(*args, **kwargs)  # pylint: disable=not-callable
 
     def _load(self, verify_requirements):
         # Avoid relying on hasattr() here.
@@ -134,7 +134,7 @@ class Plugin(object):
             )
 
 
-class PluginManager(object):
+class PluginManager(object):  # pylint: disable=too-few-public-methods
     """Find and manage plugins consistently."""
 
     def __init__(self, namespace, verify_requirements=False):
@@ -188,6 +188,8 @@ class PluginManager(object):
 class PluginTypeManager(object):
     """Parent class for most of the specific plugin types."""
 
+    namespace = None
+
     def __init__(self):
         """Initialize the plugin type's manager."""
         self.manager = PluginManager(self.namespace)
@@ -232,6 +234,7 @@ class PluginTypeManager(object):
     @staticmethod
     def _generate_call_function(method_name, optmanager, *args, **kwargs):
         def generated_function(plugin):
+            """Function that attempts to call a specific method on a plugin."""
             method = getattr(plugin, method_name, None)
             if (method is not None and
                     isinstance(method, collections.Callable)):
@@ -244,6 +247,7 @@ class PluginTypeManager(object):
             return
 
         def load_plugin(plugin):
+            """Call each plugin's load_plugin method."""
             return plugin.load_plugin()
 
         plugins = list(self.manager.map(load_plugin))
@@ -269,7 +273,7 @@ class PluginTypeManager(object):
         list(self.manager.map(call_provide_options))
 
 
-class NotifierBuilder(object):
+class NotifierBuilderMixin(object):  # pylint: disable=too-few-public-methods
     """Mixin class that builds a Notifier from a PluginManager."""
 
     def build_notifier(self):
@@ -293,7 +297,7 @@ class Checkers(PluginTypeManager):
     namespace = 'flake8.extension'
 
 
-class Listeners(PluginTypeManager, NotifierBuilder):
+class Listeners(PluginTypeManager, NotifierBuilderMixin):
     """All of the listeners registered through entry-points."""
 
     namespace = 'flake8.listen'
diff --git a/flake8/plugins/pyflakes.py b/flake8/plugins/pyflakes.py
index 7f6107a..f512511 100644
--- a/flake8/plugins/pyflakes.py
+++ b/flake8/plugins/pyflakes.py
@@ -23,7 +23,7 @@ def patch_pyflakes():
         'F402 ImportShadowedByLoopVar',
         'F403 ImportStarUsed',
         'F404 LateFutureImport',
-        'F810 Redefined',               # XXX Obsolete?
+        'F810 Redefined',
         'F811 RedefinedWhileUnused',
         'F812 RedefinedInListComp',
         'F821 UndefinedName',
@@ -48,23 +48,23 @@ class FlakesChecker(pyflakes.checker.Checker):
     def __init__(self, tree, filename):
         """Initialize the PyFlakes plugin with an AST tree and filename."""
         filename = utils.normalize_paths(filename)[0]
-        withDoctest = self.withDoctest
+        with_doctest = self.with_doctest
         included_by = [include for include in self.include_in_doctest
                        if include != '' and filename.startswith(include)]
         if included_by:
-            withDoctest = True
+            with_doctest = True
 
         for exclude in self.exclude_from_doctest:
             if exclude != '' and filename.startswith(exclude):
-                withDoctest = False
+                with_doctest = False
                 overlaped_by = [include for include in included_by
                                 if include.startswith(exclude)]
 
                 if overlaped_by:
-                    withDoctest = True
+                    with_doctest = True
 
         super(FlakesChecker, self).__init__(tree, filename,
-                                            withDoctest=withDoctest)
+                                            withDoctest=with_doctest)
 
     @classmethod
     def add_options(cls, parser):
@@ -98,7 +98,7 @@ class FlakesChecker(pyflakes.checker.Checker):
         """Parse option values from Flake8's OptionManager."""
         if options.builtins:
             cls.builtIns = cls.builtIns.union(options.builtins)
-        cls.withDoctest = options.doctests
+        cls.with_doctest = options.doctests
 
         included_files = []
         for included_file in options.include_in_doctest:
@@ -131,6 +131,9 @@ class FlakesChecker(pyflakes.checker.Checker):
 
     def run(self):
         """Run the plugin."""
-        for m in self.messages:
-            col = getattr(m, 'col', 0)
-            yield m.lineno, col, (m.flake8_msg % m.message_args), m.__class__
+        for message in self.messages:
+            col = getattr(message, 'col', 0)
+            yield (message.lineno,
+                   col,
+                   (message.flake8_msg % message.message_args),
+                   message.__class__)
diff --git a/flake8/style_guide.py b/flake8/style_guide.py
index 6a05249..00a46fe 100644
--- a/flake8/style_guide.py
+++ b/flake8/style_guide.py
@@ -145,15 +145,15 @@ class StyleGuide(object):
                       code, selected, ignored)
 
             if ((selected is Selected.Explicitly or
-                    selected is Selected.Implicitly) and
+                 selected is Selected.Implicitly) and
                     ignored is Selected.Implicitly):
                 decision = Decision.Selected
             elif (selected is Selected.Explicitly and
-                    ignored is Ignored.Explicitly):
+                  ignored is Ignored.Explicitly):
                 decision = self._decision_for(code)
             elif (selected is Ignored.Implicitly or
-                    ignored is Ignored.Explicitly):
-                decision = Decision.Ignored
+                  ignored is Ignored.Explicitly):
+                decision = Decision.Ignored  # pylint: disable=R0204
 
             self._decision_cache[code] = decision
             LOG.debug('"%s" will be "%s"', code, decision)
diff --git a/flake8/utils.py b/flake8/utils.py
index 98e5cea..1165470 100644
--- a/flake8/utils.py
+++ b/flake8/utils.py
@@ -33,7 +33,8 @@ def normalize_paths(paths, parent=os.curdir):
     :rtype:
         [str]
     """
-    return [normalize_path(p) for p in parse_comma_separated_list(paths)]
+    return [normalize_path(p, parent)
+            for p in parse_comma_separated_list(paths)]
 
 
 def normalize_path(path, parent=os.curdir):
@@ -57,8 +58,8 @@ def stdin_get_value():
     if cached_value is None:
         stdin_value = sys.stdin.read()
         if sys.version_info < (3, 0):
-            cached_value = io.BytesIO(stdin_value)
+            cached_type = io.BytesIO
         else:
-            cached_value = io.StringIO(stdin_value)
-        stdin_get_value.cached_stdin = cached_value
+            cached_type = io.StringIO
+        stdin_get_value.cached_stdin = cached_type(stdin_value)
     return cached_value.getvalue()
diff --git a/tests/unit/test_config_file_finder.py b/tests/unit/test_config_file_finder.py
index 200f4e5..6ac1d16 100644
--- a/tests/unit/test_config_file_finder.py
+++ b/tests/unit/test_config_file_finder.py
@@ -68,11 +68,11 @@ def test_cli_config():
             os.path.abspath('tox.ini'),
             os.path.abspath('.flake8')]),
 ])
-def test_generate_possible_local_config_files(args, expected):
+def test_generate_possible_local_files(args, expected):
     """Verify generation of all possible config paths."""
     finder = config.ConfigFileFinder('flake8', args, [])
 
-    assert (list(finder.generate_possible_local_config_files()) ==
+    assert (list(finder.generate_possible_local_files()) ==
             expected)