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[3.11] gh-109475: Fix support of explicit option value "--" in argparse (GH-114814) (GH-115037)

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For example "--option=--".
(cherry picked from commit 4aa4f0906d)
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Serhiy Storchaka 2024-02-05 23:04:11 +02:00 • committed by GitHub
parent 98b2f4624a
commit e1976399cd
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3 changed files with 20 additions and 1 deletions
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Lib/argparse.py
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@ -2464,7 +2464,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
# ========================
def _get_values(self, action, arg_strings):
# for everything but PARSER, REMAINDER args, strip out first '--'
if action.nargs not in [PARSER, REMAINDER]:
if not action.option_strings and action.nargs not in [PARSER, REMAINDER]:
try:
arg_strings.remove('--')
except ValueError: