docopt

• 功能还是很强大的：http://hao.jobbole.com/docopt/

[root@shuffle-dev py_test]$ vim doc.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Naval Fate.

 Usage:
   doc.py ship new <name>...
   doc.py ship <name> move <x> <y> [--speed=<kn>]
   doc.py ship shoot <x> <y>
   doc.py mine (set|remove) <x> <y> [--moored | --drifting]
   doc.py (-h | --help)
   doc.py --version
   doc.py [--name NAME] [-h] [--version]

Options:
   --name NAME   Your name                                                                                                                    
   -h --help     Show this screen.
   --version     Show version.
   --speed=<kn>  Speed in knots [default: 10].
   --moored      Moored (anchored) mine.
   --drifting    Drifting mine.

 """
from docopt import docopt

if __name__ == '__main__':
    arguments = docopt(__doc__, version='Naval Fate 2.0')
    print(arguments)

[root@shuffle-dev py_test]$ python doc.py --name shuffle
{'--drifting': False,
 '--help': False,
 '--moored': False,
 '--name': 'shuffle',
 '--speed': '10',
 '--version': False,
 '<name>': [],
 '<x>': None,
 '<y>': None,
 'mine': False,
 'move': False,
 'new': False,
 'remove': False,
 'set': False,
 'ship': False,
 'shoot': False}

[root@shuffle-dev py_test]$ python doc.py ship new shuffle
{'--drifting': False,
 '--help': False,
 '--moored': False,
 '--name': None,
 '--speed': '10',
 '--version': False,
 '<name>': ['shuffle'],
 '<x>': None,
 '<y>': None,
 'mine': False,
 'move': False,
 'new': True,
 'remove': False,
 'set': False,
 'ship': True,
 'shoot': False}