石頭剪刀布

#!/usr/bin/env python
#--- coding: gbk ---


import random


select = ['石頭', '剪刀', '布']
N = len(select)
result = [
    'nobody win',
    'you win',
    'computer win',
]
M = len(result)


choice_title = '\n'.join(
    [
        '%s: %s' % (
            i, select[i]
        ) for i in range(N)
    ]
)


while True:                     
    i = int(
        raw_input(
            'please enter your choice: \n%s\n' % choice_title
        )
    )
    if not i in range(N):
        print 'exit'
        break
    j = random.choice(range(N))
    print 'your choice: ' + select[i]
    print "computer's choice: " + select[j]
    print result[(2 * i + j) % M]