[issue16807] argparse group nesting lost on inheritance

[Irit Katriel]

Irit Katriel <iritkatriel at gmail.com> added the comment:

Reproduced on 3.11: 

>>> argparse.ArgumentParser(add_help=False, parents=[parent]).print_help()
usage: [--foo FOO] [-a | -b]

options:
  -a
  -b

the group:
  --foo FOO

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nosy: +iritkatriel
versions: +Python 3.10, Python 3.11, Python 3.9 -Python 2.7, Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue16807>
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