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bpo-33109: argparse subparsers are once again not required by default (GH-6919)

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bpo-26510 in 3.7.0a2 changed the behavior of argparse to make
subparsers required by default, returning to the behavior of 2.7
and 3.2. The behavior was changed in 3.3 to be no longer required.
While it might make more sense to have the default to required,
compatibility with 3.3 through 3.6 is probably less disruptive
than trying to reintroduce compatibility with 2.7 at this point.
This change restores the 3.6 behavior.
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Ned Deily 2018-05-23 21:55:15 -04:00 • committed by GitHub
parent 453bd0bc65
commit 8ebf5ceb0f
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Doc/library/argparse.rst
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@ -1577,7 +1577,7 @@ Sub-commands
stored; by default ``None`` and no value is stored
* required_ - Whether or not a subcommand must be provided, by default
``True``.
``False``.
* help_ - help for sub-parser group in help output, by default ``None``