[issue14074] argparse allows nargs>1 for positional arguments but doesn't allow metavar to be a tuple

[Steven Bethard]

Steven Bethard <steven.bethard at gmail.com> added the comment:

Looks like the problem is that "_format_action_invocation" is not being as careful with the different possibilities for metavar as "_format_args" is.  Patches welcome!

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14074>
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