17.设计一个石头剪刀布小游戏，用户任意输入一个字符串‘石头’、‘剪刀’‘布’，系统随机输出一个‘石头’、‘剪刀’‘布’，比较结果后最后换行输出显示，“你赢了！”或“你输了！”

17.设计一个石头剪刀布小游戏，用户任意输入一个字符串‘石头’、‘剪刀’‘布’，系统随机输出一个‘石头’、‘剪刀’‘布’，比较结果后最后换行输出显示，“你赢了！”或“你输了！”

望采纳，谢谢!

import random
computer = random.randint(0,2)
user = input("剪刀,石头，布:")
#判断电脑出的是石头，剪刀，还是布
if computer == 0:
    com = "剪刀"
elif computer == 1:
    com = "石头"
else:
    com = "布"
#判断玩家出的石头，剪刀，还是布
if user == '剪刀':
    usr = "剪刀"
    user = 0
elif user == "石头":
    usr = "石头"
    user  =1
else:
    usr = "布"
    user = 2
#结果并输出
if user == computer:
 print("玩家是%s,电脑是%s,平局"%(usr,com))
elif user - computer == -1 or user - computer == 2:
 print("玩家是%s,电脑是%s,玩家输"%(usr,com))
else:
  print("玩家是%s,电脑是%s,玩家胜"%(usr,com))