import random                       # 调用随机数模块

pc = random.randint(1,3)            # 产生1-3的随机数

print("来玩个猜拳游戏吧！")

a = '石头'

b = '剪刀'

c = '布'

user = input('请输入（石头，剪刀，布）：')

if user == '石头':

    print("你出了石头")

elif user == '剪刀':

    print("你出了剪刀")

else:

    print("你出了布")

if pc == 1:

    print('电脑出了石头')

elif pc == 2 :

    print('电脑出了剪刀')

else:

    print('电脑出了布')

if user == '石头' and pc == 2 or user =='剪刀' and pc == 3 or pc == 3 or user == '布' and pc == 1:

    print("你赢了")

elif user == '石头' and pc ==3 or user == '剪刀' and pc == 1 or user == '布' and pc == 2:

    print('你输了')

else:

    print('平局')