[issue43876] argparse documentation contrasting nargs '*' vs. '+' is misleading

[Vince Reuter]

Vince Reuter <vreuter at protonmail.com> added the comment:

There are two small related issues, but I'm not sure how they relate and/or if they've been addressed previously, so I'm sorry for duplicate messaging if that's the case.

1. If it's the case that absent an explicit `required=<bool>` statement, the option name prefix (hyphen(s) or not) determines whether the option's required, then it seems contradictory to have nargs='*' make a positional arg behave as if it's optional (i.e., no parse error if omitted).

2. Prefixing the option name with hyphen(s) seems to remove any distinction between `nargs='*'` and `nargs='+'` (at least without passing anything explicit about required)

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<https://bugs.python.org/issue43876>
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