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bpo-29298: Fix crash with required subparsers without dest (GH-3680)

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Automerge-Triggered-By: GH:encukou
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Anthony Sottile 2021-07-23 08:49:04 -04:00 • committed by GitHub
parent fe13f0b0f6
commit 17575f73ce
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Lib/argparse.py
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@ -727,6 +727,8 @@ def _get_action_name(argument):
return argument.metavar
elif argument.dest not in (None, SUPPRESS):
return argument.dest
elif argument.choices:
return '{' + ','.join(argument.choices) + '}'
else:
return None