Bob Alexander added the comment:
Thanks for the note, Martin. I agree that it's a duplicate. (I had done a
brief search for possible dups, but didn't find that one!)
Bob
On Sun, May 17, 2015 at 8:29 PM, Martin Panter <rep...@bugs.python.org>
wrote:
>
> Martin Panter added the comment:
>
> 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/argparse.py", line 1729, in
> parse_args
> self.error(msg % ' '.join(argv))
> File "/home/proj/python/cpython/Lib/argparse.py", line 2385, in error
> self.exit(2, _('%(prog)s: error: %(message)s\n') % args)
> File "/home/proj/python/cpython/Lib/argparse.py", line 2372, in exit
> _sys.exit(status)
> File "/home/pythonstartup.py", 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)
>
> ----------
> nosy: +vadmium
> resolution: -> duplicate
> stage: -> resolved
> status: open -> closed
> superseder: -> argparse: nargs='*' positional argument doesn't accept any
> items if preceded by an option and another positional
> title: argparse parsing bug -> argparse parsing (mingling --option and
> optional positional argument)
>
> _______________________________________
> Python tracker <rep...@bugs.python.org>
> <http://bugs.python.org/issue24223>
> _______________________________________
>
----------
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue24223>
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