argparse

gistfile1.txt

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


import argparse


def build_argparser():
    parser = argparse.ArgumentParser()
    parser.add_argument('--foo', action='store_true', help='foo help')
    subparsers = parser.add_subparsers(help='sub-command help', dest="cmd")

    parser_a = subparsers.add_parser('a', help='a help')
    parser_a.add_argument('bar', type=int, help='bar help')

    parser_b = subparsers.add_parser('b', help='a help')
    parser_b.add_argument('kaka', type=int, help='bar help')

    return parser


def dispatch_cmd(args):
    if not args.foo:
        args.foo = True

    if args.cmd == 'a':
        cmd_a(args)
    elif args.cmd == 'b':
        cmd_b(args)
    else:
        pass


def cmd_a(args):
    print "cmd_a"
    print args


def cmd_b(args):
    print "cmd_b"
    print args


def main():
    args = build_argparser().parse_args()
    print args
    dispatch_cmd(args)


if __name__ == "__main__":
    main()