[New-bugs-announce] [issue45690] Argparse exclusive group inside required exclusive group displays incorrectly
andrew cooke
report at bugs.python.org
Tue Nov 2 09:39:20 EDT 2021
New submission from andrew cooke <andrew at acooke.org>:
The code below, when invoked with -h, prints:
(.env) [andrew at localhost py]$ python -m tests_sa.argparse_bug -h
usage: argparse_bug.py [-h] (-a A | [-b B | -c C)]
options:
-h, --help show this help message and exit
-a A
-b B
-c C
where the final two characters in the usage line are swapped. It should be
usage: argparse_bug.py [-h] (-a A | [-b B | -c C])
or maybe even
usage: argparse_bug.py [-h] (-a A | (-b B | -c C))
from argparse import ArgumentParser
def main():
parser = ArgumentParser()
outer = parser.add_mutually_exclusive_group(required=True)
outer.add_argument('-a')
inner = outer.add_mutually_exclusive_group()
inner.add_argument('-b')
inner.add_argument('-c')
parser.parse_args()
if __name__ == '__main__':
main()
----------
components: Library (Lib)
messages: 405509
nosy: acooke
priority: normal
severity: normal
status: open
title: Argparse exclusive group inside required exclusive group displays incorrectly
versions: Python 3.10
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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45690>
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