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bpo-26510: Add versionchanged for required arg of add_subparsers #16588

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miss-islington merged 4 commits into from
Oct 7, 2019
Merged

bpo-26510: Add versionchanged for required arg of add_subparsers #16588

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7e01621
Add versionadded for required arg of add_subparsers
adamjstewart Oct 4, 2019
319fd71
Update what's new note
adamjstewart Oct 4, 2019
1cd6722
Add additional note since docs are long
adamjstewart Oct 4, 2019
eb63af0
Additional changes requested during code review
adamjstewart Oct 4, 2019
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5 changes: 4 additions & 1 deletion Doc/library/argparse.rst
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Expand Up @@ -1636,7 +1636,7 @@ Sub-commands
stored; by default ``None`` and no value is stored

* required_ - Whether or not a subcommand must be provided, by default
``False``.
``False``. (added in 3.7)
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* help_ - help for sub-parser group in help output, by default ``None``

Expand Down Expand Up @@ -1792,6 +1792,9 @@ Sub-commands
>>> parser.parse_args(['2', 'frobble'])
Namespace(subparser_name='2', y='frobble')

.. versionadded:: 3.7
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The *required* keyword argument.


FileType objects
^^^^^^^^^^^^^^^^
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4 changes: 4 additions & 0 deletions Doc/whatsnew/3.7.rst
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Expand Up @@ -2401,6 +2401,10 @@ Changes in the Python API
instead of a :class:`bytes` instance.
(Contributed by Victor Stinner in :issue:`21071`.)

* :meth:`ArgumentParser.add_subparsers() <argparse.ArgumentParser.add_subparsers>`
has a new ``required`` parameter that defaults to ``False``.
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(Contributed by Anthony Sottile in :issue:`26510`.)

* :meth:`ast.literal_eval()` is now stricter. Addition and subtraction of
arbitrary numbers are no longer allowed.
(Contributed by Serhiy Storchaka in :issue:`31778`.)
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