[issue10424] better error message from argparse when positionals missing

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

With input from Michele on IRC I updated the tests to be more generic (not depend on the order of the reported argument names) and moved the test I talked about in my last message into a third unit test.

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resolution:  -> accepted
stage: needs patch -> committed/rejected
status: open -> closed
type:  -> feature request

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10424>
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