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Issue #25314: Merge argparse doc from 3.5

This commit is contained in:
Martin Panter 2016-03-28 06:13:52 +00:00
parent ef4bb1e994 f9cddccf8c
commit eba25880f8
1 changed files with 6 additions and 4 deletions
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Doc/library/argparse.rst
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@ -729,15 +729,17 @@ how the command-line arguments should be handled. The supplied actions are:
>>> parser.parse_args('--foo'.split()) >>> parser.parse_args('--foo'.split())
Namespace(foo=42) Namespace(foo=42)
* ``'store_true'`` and ``'store_false'`` - These store the values ``True`` and * ``'store_true'`` and ``'store_false'`` - These are special cases of
``False`` respectively. These are special cases of ``'store_const'``. For ``'store_const'`` used for storing the values ``True`` and ``False``
example:: respectively. In addition, they create default values of ``False`` and
``True`` respectively. For example::
>>> parser = argparse.ArgumentParser() >>> parser = argparse.ArgumentParser()
>>> parser.add_argument('--foo', action='store_true') >>> parser.add_argument('--foo', action='store_true')
>>> parser.add_argument('--bar', action='store_false') >>> parser.add_argument('--bar', action='store_false')
>>> parser.add_argument('--baz', action='store_false')
>>> parser.parse_args('--foo --bar'.split()) >>> parser.parse_args('--foo --bar'.split())
Namespace(bar=False, foo=True) Namespace(foo=True, bar=False, baz=True)
* ``'append'`` - This stores a list, and appends each argument value to the * ``'append'`` - This stores a list, and appends each argument value to the
list. This is useful to allow an option to be specified multiple times. list. This is useful to allow an option to be specified multiple times.