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gh-72795: Make positional arguments with nargs='*' or REMAINDER non-required (GH-124306)

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This allows to use positional argument with nargs='*' and without default
in mutually exclusive group and improves error message about required
arguments.
This commit is contained in:
Serhiy Storchaka 2024-09-24 10:55:33 +03:00 • committed by GitHub
parent c578271366
commit 3c83f9958c
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3 changed files with 32 additions and 8 deletions
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5
Lib/argparse.py
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@ -1532,9 +1532,8 @@ class _ActionsContainer(object):
# mark positional arguments as required if at least one is
# always required
if kwargs.get('nargs') not in [OPTIONAL, ZERO_OR_MORE]:
kwargs['required'] = True
if kwargs.get('nargs') == ZERO_OR_MORE and 'default' not in kwargs:
nargs = kwargs.get('nargs')
if nargs not in [OPTIONAL, ZERO_OR_MORE, REMAINDER, SUPPRESS, 0]:
kwargs['required'] = True
# return the keyword arguments with no option strings