20190919—1

import random
cai_quan_you_xi = ['石头','剪刀','布']
computer = random.choice(cai_quan_you_xi)
user = input('请输入：石头、剪刀、布')
while user not in cai_quan_you_xi:
    print('输入错误，请重新输入')
    user = input()
print('_____战斗过程_____')
print('电脑出了%s' % computer)
print('用户出了%s' % user)
if computer == user:
    print('平局')
elif (computer=='石头' and user=='布') or (computer=='剪刀' and user=='石头') or (computer=='布' and user=='剪刀'):
    print('用户赢了')
else:
    print('用户输了')