Removed the expensive imports from cmd2/__init__.py

Added some shared definitions to cmd2/__init__.py -> maybe there's a better place for these?
Figured out how to trick bash into showing argument hints. It's a bit weird.
Updated all of the tests and examples to import cmd2 resources from their new location without the automatic imports in cmd2/__init__.py
For #369

17 files changed, 63 insertions, 52 deletions

diff --git a/examples/alias_startup.py b/examples/alias_startup.py
index 30764c27..a02972b6 100755
--- a/examples/alias_startup.py
+++ b/examples/alias_startup.py
@@ -6,10 +6,10 @@
 """
 import argparse
 
-import cmd2
+from cmd2 import cmd2
 import pyparsing
 
-from cmd2 import with_argument_list, with_argparser, with_argparser_and_unknown_args
+from cmd2.cmd2 import with_argument_list, with_argparser, with_argparser_and_unknown_args
 
 
 class AliasAndStartup(cmd2.Cmd):
diff --git a/examples/arg_print.py b/examples/arg_print.py
index 18fa483f..90df053a 100755
--- a/examples/arg_print.py
+++ b/examples/arg_print.py
@@ -11,10 +11,8 @@ It also serves as an example of how to create command aliases (shortcuts).
 """
 import argparse
 
-import cmd2
-import pyparsing
-
-from cmd2 import with_argument_list, with_argparser, with_argparser_and_unknown_args
+from cmd2 import cmd2
+from cmd2.cmd2 import with_argument_list, with_argparser, with_argparser_and_unknown_args
 
 
 class ArgumentAndOptionPrinter(cmd2.Cmd):
diff --git a/examples/argparse_example.py b/examples/argparse_example.py
index e9b377ba..e8afef5c 100755
--- a/examples/argparse_example.py
+++ b/examples/argparse_example.py
@@ -14,7 +14,7 @@ verifying that the output produced matches the transcript.
 import argparse
 import sys
 
-from cmd2 import Cmd, with_argparser, with_argument_list
+from cmd2.cmd2 import Cmd, with_argparser, with_argument_list
 
 
 class CmdLineApp(Cmd):
diff --git a/examples/environment.py b/examples/environment.py
index c245f55d..af452e4e 100755
--- a/examples/environment.py
+++ b/examples/environment.py
@@ -4,7 +4,7 @@
 A sample application for cmd2 demonstrating customized environment parameters
 """
 
-from cmd2 import Cmd
+from cmd2.cmd2 import Cmd
 
 
 class EnvironmentApp(Cmd):
diff --git a/examples/event_loops.py b/examples/event_loops.py
index 53d3ca2b..a76c5d91 100755
--- a/examples/event_loops.py
+++ b/examples/event_loops.py
@@ -6,7 +6,7 @@ This is an example of how to use cmd2 in a way so that cmd2 doesn't own the inne
 
 This opens up the possibility of registering cmd2 input with event loops, like asyncio, without occupying the main loop.
 """
-import cmd2
+from cmd2 import cmd2
 
 
 class Cmd2EventBased(cmd2.Cmd):
diff --git a/examples/example.py b/examples/example.py
index 612d81e5..1fc6bf6d 100755
--- a/examples/example.py
+++ b/examples/example.py
@@ -14,7 +14,7 @@ the transcript.
 import random
 import argparse
 
-from cmd2 import Cmd, with_argparser
+from cmd2.cmd2 import Cmd, with_argparser
 
 
 class CmdLineApp(Cmd):
diff --git a/examples/help_categories.py b/examples/help_categories.py
index cfb5f253..7adedb51 100755
--- a/examples/help_categories.py
+++ b/examples/help_categories.py
@@ -4,7 +4,7 @@
 A sample application for tagging categories on commands.
 """
 
-from cmd2 import Cmd, categorize, __version__, with_argparser, with_category
+from cmd2.cmd2 import Cmd, categorize, __version__, with_argparser, with_category
 import argparse
 
 
diff --git a/examples/paged_output.py b/examples/paged_output.py
index bb410af6..9396f04e 100755
--- a/examples/paged_output.py
+++ b/examples/paged_output.py
@@ -3,8 +3,8 @@
 """A simple example demonstrating the using paged output via the ppaged() method.
 """
 
-import cmd2
-from cmd2 import with_argument_list
+from cmd2 import cmd2
+from cmd2.cmd2 import with_argument_list
 
 
 class PagedOutput(cmd2.Cmd):
diff --git a/examples/persistent_history.py b/examples/persistent_history.py
index 61e26b9c..251dbd67 100755
--- a/examples/persistent_history.py
+++ b/examples/persistent_history.py
@@ -5,7 +5,7 @@
 This will allow end users of your cmd2-based application to use the arrow keys and Ctrl+r in a manner which persists
 across invocations of your cmd2 application.  This can make it much easier for them to use your application.
 """
-import cmd2
+from cmd2 import cmd2
 
 
 class Cmd2PersistentHistory(cmd2.Cmd):
diff --git a/examples/pirate.py b/examples/pirate.py
index 7fe3884b..2daa8631 100755
--- a/examples/pirate.py
+++ b/examples/pirate.py
@@ -7,7 +7,7 @@ presented as part of her PyCon 2010 talk.
 It demonstrates many features of cmd2.
 """
 import argparse
-from cmd2 import Cmd, with_argparser
+from cmd2.cmd2 import Cmd, with_argparser
 
 
 class Pirate(Cmd):
diff --git a/examples/python_scripting.py b/examples/python_scripting.py
index 7e2cf345..865cf052 100755
--- a/examples/python_scripting.py
+++ b/examples/python_scripting.py
@@ -17,7 +17,7 @@ This application and the "scripts/conditional.py" script serve as an example for
 import argparse
 import os
 
-import cmd2
+from cmd2 import cmd2
 
 
 class CmdLineApp(cmd2.Cmd):
diff --git a/examples/remove_unused.py b/examples/remove_unused.py
index 8a567123..dfe0a055 100755
--- a/examples/remove_unused.py
+++ b/examples/remove_unused.py
@@ -9,7 +9,7 @@ name, they just won't clutter the help menu.
 Commands can also be removed entirely by using Python's "del".
 """
 
-import cmd2
+from cmd2 import cmd2
 
 
 class RemoveUnusedBuiltinCommands(cmd2.Cmd):
diff --git a/examples/subcommands.py b/examples/subcommands.py
index 75c0733e..01f5b218 100755
--- a/examples/subcommands.py
+++ b/examples/subcommands.py
@@ -1,18 +1,56 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # coding=utf-8
+# PYTHON_ARGCOMPLETE_OK
 """A simple example demonstrating how to use Argparse to support subcommands.
 
 
 This example shows an easy way for a single command to have many subcommands, each of which takes different arguments
 and provides separate contextual help.
 """
+from cmd2.argcomplete_bridge import CompletionFinder
+from cmd2.argparse_completer import AutoCompleter
 import argparse
 
-import cmd2
-from cmd2 import with_argparser
-
 sport_item_strs = ['Bat', 'Basket', 'Basketball', 'Football', 'Space Ball']
 
+# create the top-level parser for the base command
+base_parser = argparse.ArgumentParser(prog='base')
+base_subparsers = base_parser.add_subparsers(title='subcommands', help='subcommand help')
+
+# create the parser for the "foo" subcommand
+parser_foo = base_subparsers.add_parser('foo', help='foo help')
+parser_foo.add_argument('-x', type=int, default=1, help='integer')
+parser_foo.add_argument('y', type=float, help='float')
+
+# create the parser for the "bar" subcommand
+parser_bar = base_subparsers.add_parser('bar', help='bar help')
+
+bar_subparsers = parser_bar.add_subparsers(title='layer3', help='help for 3rd layer of commands')
+parser_bar.add_argument('z', help='string')
+
+bar_subparsers.add_parser('apple', help='apple help')
+bar_subparsers.add_parser('artichoke', help='artichoke help')
+bar_subparsers.add_parser('cranberries', help='cranberries help')
+
+# create the parser for the "sport" subcommand
+parser_sport = base_subparsers.add_parser('sport', help='sport help')
+sport_arg = parser_sport.add_argument('sport', help='Enter name of a sport')
+setattr(sport_arg, 'arg_choices', sport_item_strs)
+
+# Set both a function and tab completer for the "sport" subcommand
+
+if __name__ == '__main__':
+    with open('out.txt', 'a') as f:
+        f.write('Here 1')
+        f.flush()
+    completer = CompletionFinder()
+    completer(base_parser, AutoCompleter(base_parser))
+
+
+from cmd2 import cmd2
+from cmd2.cmd2 import with_argparser
+
+
 class SubcommandsExample(cmd2.Cmd):
     """
     Example cmd2 application where we a base command which has a couple subcommands
@@ -35,33 +73,8 @@ class SubcommandsExample(cmd2.Cmd):
         """sport subcommand of base command"""
         self.poutput('Sport is {}'.format(args.sport))
 
-    # create the top-level parser for the base command
-    base_parser = argparse.ArgumentParser(prog='base')
-    base_subparsers = base_parser.add_subparsers(title='subcommands', help='subcommand help')
-
-    # create the parser for the "foo" subcommand
-    parser_foo = base_subparsers.add_parser('foo', help='foo help')
-    parser_foo.add_argument('-x', type=int, default=1, help='integer')
-    parser_foo.add_argument('y', type=float, help='float')
     parser_foo.set_defaults(func=base_foo)
-
-    # create the parser for the "bar" subcommand
-    parser_bar = base_subparsers.add_parser('bar', help='bar help')
     parser_bar.set_defaults(func=base_bar)
-
-    bar_subparsers = parser_bar.add_subparsers(title='layer3', help='help for 3rd layer of commands')
-    parser_bar.add_argument('z', help='string')
-
-    bar_subparsers.add_parser('apple', help='apple help')
-    bar_subparsers.add_parser('artichoke', help='artichoke help')
-    bar_subparsers.add_parser('cranberries', help='cranberries help')
-
-    # create the parser for the "sport" subcommand
-    parser_sport = base_subparsers.add_parser('sport', help='sport help')
-    sport_arg = parser_sport.add_argument('sport', help='Enter name of a sport')
-    setattr(sport_arg, 'arg_choices', sport_item_strs)
-
-    # Set both a function and tab completer for the "sport" subcommand
     parser_sport.set_defaults(func=base_sport)
 
     @with_argparser(base_parser)
diff --git a/examples/submenus.py b/examples/submenus.py
index 44b17f33..27c8cb10 100755
--- a/examples/submenus.py
+++ b/examples/submenus.py
@@ -11,7 +11,7 @@ of the submenu. Nesting of the submenus is done with the cmd2.AddSubmenu() decor
 from __future__ import print_function
 import sys
 
-import cmd2
+from cmd2 import cmd2
 from IPython import embed
 
 
diff --git a/examples/tab_autocompletion.py b/examples/tab_autocompletion.py
index a1a8daee..02c48ca5 100755
--- a/examples/tab_autocompletion.py
+++ b/examples/tab_autocompletion.py
@@ -10,8 +10,8 @@ import argparse
 import itertools
 from typing import List
 
-import cmd2
-from cmd2 import with_argparser, with_category, argparse_completer
+from cmd2 import cmd2, argparse_completer
+from cmd2.cmd2 import with_argparser, with_category
 
 actors = ['Mark Hamill', 'Harrison Ford', 'Carrie Fisher', 'Alec Guinness', 'Peter Mayhew',
           'Anthony Daniels', 'Adam Driver', 'Daisy Ridley', 'John Boyega', 'Oscar Isaac',
diff --git a/examples/tab_completion.py b/examples/tab_completion.py
index 919e9560..30fa283d 100755
--- a/examples/tab_completion.py
+++ b/examples/tab_completion.py
@@ -4,8 +4,8 @@
 """
 import argparse
 
-import cmd2
-from cmd2 import with_argparser, with_argument_list
+from cmd2 import cmd2
+from cmd2.cmd2 import with_argparser, with_argument_list
 
 # List of strings used with flag and index based completion functions
 food_item_strs = ['Pizza', 'Ham', 'Ham Sandwich', 'Potato']
diff --git a/examples/table_display.py b/examples/table_display.py
index 2e6ea804..5d168408 100755
--- a/examples/table_display.py
+++ b/examples/table_display.py
@@ -12,7 +12,7 @@ WARNING: This example requires the tabulate module.
 """
 import functools
 
-import cmd2
+from cmd2 import cmd2
 import tabulate
 
 # Format to use with tabulate module when displaying tables