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Author martin.panter
Recipients bobjalex, martin.panter
Date 2015-05-18.03:29:16
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
I suggest this is a duplicate of Issue 15112. The same problem also happens with nargs="*", and that issue apparently has a patch to handle both cases.

For the record, this is the resulting error, and a demo that it works if the option comes before the positional arguments:

>>> print("test 2:", ap.parse_args(["abc", "--option", "mmm"]))
usage: [-h] [--option] arg_1 [arg_2]
: error: unrecognized arguments: mmm
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/proj/python/cpython/Lib/", line 1729, in parse_args
    self.error(msg % ' '.join(argv))
  File "/home/proj/python/cpython/Lib/", line 2385, in error
    self.exit(2, _('%(prog)s: error: %(message)s\n') % args)
  File "/home/proj/python/cpython/Lib/", line 2372, in exit
  File "/home/", line 345, in exit
    raise SystemExit(code)
__main__.SystemExit: 2
>>> ap.parse_args(["--option", "abc", "mmm"])
Namespace(arg_1='abc', arg_2='mmm', option=True)
Date User Action Args
2015-05-18 03:29:16martin.pantersetrecipients: + martin.panter, bobjalex
2015-05-18 03:29:16martin.pantersetmessageid: <>
2015-05-18 03:29:16martin.panterlinkissue24223 messages
2015-05-18 03:29:16martin.pantercreate