simple gists: argparse vs docopt

myopt.py

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

"""Test docopt example.

Usage:
    myopt.py run (update|watch)
    myopt.py -h | --help
    myopt.py --version

Options:
    -h --help   Show help message.
    --version   Show version.
"""

from docopt import docopt

if __name__ == '__main__':
    args = docopt(__doc__, version='1.0')
    if args['run']:
        if args['update']:
            print 'start updating...'
        elif args['watch']:
            print 'watch running status...'

opt.py

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('--run', dest='action',
            help='run scrpit with certain action')
    args = parser.parse_args()
    if args.action == 'update':
        print 'start updating...'
        # update()
    elif args.action == 'watch':
        print 'watch running status...'
        # watch()

Btw, line 20 in docopt version is redundant, because if args['run'] will always be true here (otherwise docopt would have shown help or version).

Also, your argparse version would be much bigger if you implemented run as command (as you did in docopt), it would require to add a sub-parser.