gift_exchange.py

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

import argparse
from random import shuffle

GUEST_NAME = [
    u'阿仁',
    u'sk',
    u'lulu',
    u'えるし',
    u'S',
    u'熊猫叔',
    u'崭崭',
    u'呆鲑',
    u'オラララ',
    u'阿源',
    u'周游',
    u'许可',
    u'周璟',
    u'YZ',
    u'阿花',
]


def main(person):
    if person < 2 or person > len(GUEST_NAME):
        print 'invalid input'
        exit()
    x = range(person)
    done = False
    while (not done):
        shuffle(x)
        done = True
        for idx, val in enumerate(x):
            if idx == val:
                done = False
                break

    y = range(person)
    shuffle(y)

    for i in y:
        print GUEST_NAME[i], '->', GUEST_NAME[x[i]]

if __name__ == '__main__':
    parser = argparse.ArgumentParser(
        description="hehe")
    parser.add_argument('--person', type=int,
                        default='15')
    args = parser.parse_args()
    main(args.person)