[docs] [issue14191] argparse doesn't allow optionals within positionals

[Glenn Linderman]

Glenn Linderman added the comment:

I would dearly love to discard my private copies of argparse subclasses to implement this that I have been using for the last 5 years. Please, some other committer, concur here!

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14191>
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