Added capability to override the argument parser class used by cmd2 built-in commands

1 files changed, 11 insertions, 1 deletions

diff --git a/cmd2/__init__.py b/cmd2/__init__.py
index 8e8a8845..8fc5e9f2 100644
--- a/cmd2/__init__.py
+++ b/cmd2/__init__.py
@@ -11,7 +11,17 @@ except DistributionNotFound:
     pass
 
 from .ansi import style
-from .argparse_custom import Cmd2ArgumentParser, CompletionError, CompletionItem
+from .argparse_custom import Cmd2ArgumentParser, CompletionError, CompletionItem, set_default_argument_parser
+
+# Check if user has defined a module that sets a custom value for argparse_custom.DEFAULT_ARGUMENT_PARSER
+import argparse
+cmd2_parser_module = getattr(argparse, 'cmd2_parser_module', None)
+if cmd2_parser_module is not None:
+    import importlib
+    importlib.import_module(cmd2_parser_module)
+
+# Get the current value for argparse_custom.DEFAULT_ARGUMENT_PARSER
+from .argparse_custom import DEFAULT_ARGUMENT_PARSER
 from .cmd2 import Cmd, EmptyStatement
 from .constants import COMMAND_NAME, DEFAULT_SHORTCUTS
 from .decorators import categorize, with_argument_list, with_argparser, with_argparser_and_unknown_args, with_category