diff options
Diffstat (limited to 'Doc/library/argparse.rst')
| -rw-r--r-- | Doc/library/argparse.rst | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst index 42f9c42..d68e177 100644 --- a/Doc/library/argparse.rst +++ b/Doc/library/argparse.rst @@ -120,7 +120,9 @@ command-line args from :data:`sys.argv`. ArgumentParser objects ---------------------- -.. class:: ArgumentParser([description], [epilog], [prog], [usage], [add_help], [argument_default], [parents], [prefix_chars], [conflict_handler], [formatter_class]) +.. class:: ArgumentParser([description], [epilog], [prog], [usage], [add_help], \ + [argument_default], [parents], [prefix_chars], \ + [conflict_handler], [formatter_class]) Create a new :class:`ArgumentParser` object. Each parameter has its own more detailed description below, but in short they are: @@ -563,7 +565,9 @@ your usage messages. The add_argument() method ------------------------- -.. method:: ArgumentParser.add_argument(name or flags..., [action], [nargs], [const], [default], [type], [choices], [required], [help], [metavar], [dest]) +.. method:: ArgumentParser.add_argument(name or flags..., [action], [nargs], \ + [const], [default], [type], [choices], [required], \ + [help], [metavar], [dest]) Define how a single command line argument should be parsed. Each parameter has its own more detailed description below, but in short they are: @@ -777,9 +781,11 @@ values are: >>> parser.add_argument('outfile', nargs='?', type=argparse.FileType('w'), ... default=sys.stdout) >>> parser.parse_args(['input.txt', 'output.txt']) - Namespace(infile=<open file 'input.txt', mode 'r' at 0x...>, outfile=<open file 'output.txt', mode 'w' at 0x...>) + Namespace(infile=<open file 'input.txt', mode 'r' at 0x...>, + outfile=<open file 'output.txt', mode 'w' at 0x...>) >>> parser.parse_args([]) - Namespace(infile=<open file '<stdin>', mode 'r' at 0x...>, outfile=<open file '<stdout>', mode 'w' at 0x...>) + Namespace(infile=<open file '<stdin>', mode 'r' at 0x...>, + outfile=<open file '<stdout>', mode 'w' at 0x...>) * ``'*'``. All command-line args present are gathered into a list. Note that it generally doesn't make much sense to have more than one positional argument @@ -1753,11 +1759,12 @@ backwards compatibility. A partial upgrade path from optparse to argparse: -* Replace all ``add_option()`` calls with :meth:`ArgumentParser.add_argument` calls. +* Replace all ``add_option()`` calls with :meth:`ArgumentParser.add_argument` + calls. * Replace ``options, args = parser.parse_args()`` with ``args = - parser.parse_args()`` and add additional :meth:`ArgumentParser.add_argument` calls for the - positional arguments. + parser.parse_args()`` and add additional :meth:`ArgumentParser.add_argument` + calls for the positional arguments. * Replace callback actions and the ``callback_*`` keyword arguments with ``type`` or ``action`` arguments. |