[issue28609] argparse claims '*' positional argument is required in error output

[Reuben Thomas]

Reuben Thomas added the comment:

Thanks, that's a simple, robust workaround.

I'll duck out now and leave the Python experts to sort out the underlying problem, if they can; I think it's still well worth sorting out, though documenting the problem and workaround would be much better than nothing.

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<http://bugs.python.org/issue28609>
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