Fix bug 9340 - argparse parse_known_args didn't work with subparsers
diff --git a/Lib/argparse.py b/Lib/argparse.py
index 38dd8e6..855ff5b 100644
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -102,6 +102,7 @@
ONE_OR_MORE = '+'
PARSER = 'A...'
REMAINDER = '...'
+_UNRECOGNIZED_ARGS_ATTR = '_unrecognized_args'
# =============================
# Utility functions and classes
@@ -1083,7 +1084,12 @@
raise ArgumentError(self, msg)
# parse all the remaining options into the namespace
- parser.parse_args(arg_strings, namespace)
+ # store any unrecognized options on the object, so that the top
+ # level parser can decide what to do with them
+ namespace, arg_strings = parser.parse_known_args(arg_strings, namespace)
+ if arg_strings:
+ vars(namespace).setdefault(_UNRECOGNIZED_ARGS_ATTR, [])
+ getattr(namespace, _UNRECOGNIZED_ARGS_ATTR).extend(arg_strings)
# ==============
@@ -1699,7 +1705,11 @@
# parse the arguments and exit if there are any errors
try:
- return self._parse_known_args(args, namespace)
+ namespace, args = self._parse_known_args(args, namespace)
+ if hasattr(namespace, _UNRECOGNIZED_ARGS_ATTR):
+ args.extend(getattr(namespace, _UNRECOGNIZED_ARGS_ATTR))
+ delattr(namespace, _UNRECOGNIZED_ARGS_ATTR)
+ return namespace, args
except ArgumentError:
err = _sys.exc_info()[1]
self.error(str(err))