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Note the store_true and store_false also create the appropriate defaults.

This commit is contained in:
Raymond Hettinger 2011-11-20 11:05:23 -08:00
parent 7d1483cbad
commit 421467f8f0
1 changed files with 6 additions and 4 deletions
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Doc/library/argparse.rst
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@ -670,15 +670,17 @@ how the command-line arguments should be handled. The supported actions are:
>>> parser.parse_args('--foo'.split())
Namespace(foo=42)
* ``'store_true'`` and ``'store_false'`` - These store the values ``True`` and
``False`` respectively. These are special cases of ``'store_const'``. For
example::
* ``'store_true'`` and ``'store_false'`` - These are special cases of
``'store_const'`` using for storing the values ``True`` and ``False``
respectively. In addition, they create default values of *False* and *True*
respectively. For example::
>>> parser = argparse.ArgumentParser()
>>> parser.add_argument('--foo', action='store_true')
>>> parser.add_argument('--bar', action='store_false')
>>> parser.add_argument('--baz', action='store_false')
>>> parser.parse_args('--foo --bar'.split())
Namespace(bar=False, foo=True)
Namespace(bar=False, baz=True, foo=True)
* ``'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.