mirror of https://github.com/python/cpython
Merge 3.2
This commit is contained in:
commit
a7e594b9a5
|
@ -739,7 +739,7 @@ how the command-line arguments should be handled. The supported actions are:
|
|||
|
||||
* ``'version'`` - This expects a ``version=`` keyword argument in the
|
||||
:meth:`~ArgumentParser.add_argument` call, and prints version information
|
||||
and exits when invoked.
|
||||
and exits when invoked::
|
||||
|
||||
>>> import argparse
|
||||
>>> parser = argparse.ArgumentParser(prog='PROG')
|
||||
|
@ -791,8 +791,8 @@ single action to be taken. The ``nargs`` keyword argument associates a
|
|||
different number of command-line arguments with a single action. The supported
|
||||
values are:
|
||||
|
||||
* ``N`` (an integer). ``N`` arguments from the command line will be gathered together into a
|
||||
list. For example::
|
||||
* ``N`` (an integer). ``N`` arguments from the command line will be gathered
|
||||
together into a list. For example::
|
||||
|
||||
>>> parser = argparse.ArgumentParser()
|
||||
>>> parser.add_argument('--foo', nargs=2)
|
||||
|
@ -861,7 +861,7 @@ values are:
|
|||
|
||||
* ``argparse.REMAINDER``. All the remaining command-line arguments are gathered
|
||||
into a list. This is commonly useful for command line utilities that dispatch
|
||||
to other command line utilities.
|
||||
to other command line utilities::
|
||||
|
||||
>>> parser = argparse.ArgumentParser(prog='PROG')
|
||||
>>> parser.add_argument('--foo')
|
||||
|
@ -884,7 +884,8 @@ the various :class:`ArgumentParser` actions. The two most common uses of it are
|
|||
|
||||
* When :meth:`~ArgumentParser.add_argument` is called with
|
||||
``action='store_const'`` or ``action='append_const'``. These actions add the
|
||||
``const`` value to one of the attributes of the object returned by :meth:`~ArgumentParser.parse_args`. See the action_ description for examples.
|
||||
``const`` value to one of the attributes of the object returned by
|
||||
:meth:`~ArgumentParser.parse_args`. See the action_ description for examples.
|
||||
|
||||
* When :meth:`~ArgumentParser.add_argument` is called with option strings
|
||||
(like ``-f`` or ``--foo``) and ``nargs='?'``. This creates an optional
|
||||
|
@ -1595,21 +1596,21 @@ FileType objects
|
|||
The :class:`FileType` factory creates objects that can be passed to the type
|
||||
argument of :meth:`ArgumentParser.add_argument`. Arguments that have
|
||||
:class:`FileType` objects as their type will open command-line arguments as files
|
||||
with the requested modes and buffer sizes:
|
||||
with the requested modes and buffer sizes::
|
||||
|
||||
>>> parser = argparse.ArgumentParser()
|
||||
>>> parser.add_argument('--output', type=argparse.FileType('wb', 0))
|
||||
>>> parser.parse_args(['--output', 'out'])
|
||||
Namespace(output=<_io.BufferedWriter name='out'>)
|
||||
>>> parser = argparse.ArgumentParser()
|
||||
>>> parser.add_argument('--output', type=argparse.FileType('wb', 0))
|
||||
>>> parser.parse_args(['--output', 'out'])
|
||||
Namespace(output=<_io.BufferedWriter name='out'>)
|
||||
|
||||
FileType objects understand the pseudo-argument ``'-'`` and automatically
|
||||
convert this into ``sys.stdin`` for readable :class:`FileType` objects and
|
||||
``sys.stdout`` for writable :class:`FileType` objects:
|
||||
``sys.stdout`` for writable :class:`FileType` objects::
|
||||
|
||||
>>> parser = argparse.ArgumentParser()
|
||||
>>> parser.add_argument('infile', type=argparse.FileType('r'))
|
||||
>>> parser.parse_args(['-'])
|
||||
Namespace(infile=<_io.TextIOWrapper name='<stdin>' encoding='UTF-8'>)
|
||||
>>> parser = argparse.ArgumentParser()
|
||||
>>> parser.add_argument('infile', type=argparse.FileType('r'))
|
||||
>>> parser.parse_args(['-'])
|
||||
Namespace(infile=<_io.TextIOWrapper name='<stdin>' encoding='UTF-8'>)
|
||||
|
||||
|
||||
Argument groups
|
||||
|
|
Loading…
Reference in New Issue