Question

我正在尝试制作一个需要两个人玩的石头剪刀代码，但是当我尝试使用while循环时，它会不断打印答案。

代码：

play = input("Do you want to play?")
player1 = input("Rock, paper or scissors?")
player2 = input("Rock, paper or scissors?")
while play == "no":
    print("Why are you wasting my time? HUH?")
while play == "yes":

    if (player1 == 'rock' and player2 == 'scissors'):
        print ("Player 1 wins.")
    elif (player1 == 'rock' and player2 == 'rock'):
        print ("Tie")
    elif (player1 == 'scissors' and player2 == 'paper'):
        print ("Player 1 wins.")
    elif (player2 == 'scissors' and player2 == 'scissors'):
        print ("Tie")
    elif (player1 == 'paper' and player2 == 'paper'):
        print ("Tie")
    elif (player1 == 'paper' and player2 == 'scissors'):
        print ("Player 2 wins.")
    elif (player1 == 'rock'and player2 == 'paper'):
        print ("Player 2 wins.")
    elif (player1 == 'paper' and player2 == 'rock'):
        print ("Player 2 wins.")
    elif (player1 == 'scissors' and player2 == 'rock'):
        print ("Player 2 wins.")     
    else:
        print ("This is not a valid object selection.")

Answer 1

问题是在您输入任一循环后play永不改变。因此循环永远重复。您还必须将input移动到循环中。

我只使用一个while循环重新编写代码，因为这更容易做，如果玩家想要停止播放，则使用break取消。否则，两个玩家都被要求移动，然后打印相应的输出。之后，while循环重复整个过程。

我还在if语句中添加了一个else-case，以防在被问到是否要玩时既不回答是也不回答。然后我只打印一条错误消息，然后再次循环。

while True:
    play = input("Do you want to play?")
    if play == "no":
        print("Why are you wasting my time? HUH?")
        break # exits the loop if you don't want to play
    elif play == "yes":
        player1 = input("Rock, paper or scissors?")
        player2 = input("Rock, paper or scissors?")
        if (player1 == 'rock' and player2 == 'scissors'):
            print ("Player 1 wins.")
        elif (player1 == 'rock' and player2 == 'rock'):
            print ("Tie")
        elif (player1 == 'scissors' and player2 == 'paper'):
            print ("Player 1 wins.")
        elif (player2 == 'scissors' and player2 == 'scissors'):
            print ("Tie")
        elif (player1 == 'paper' and player2 == 'paper'):
            print ("Tie")
        elif (player1 == 'paper' and player2 == 'scissors'):
            print ("Player 2 wins.")
        elif (player1 == 'rock'and player2 == 'paper'):
            print ("Player 2 wins.")
        elif (player1 == 'paper' and player2 == 'rock'):
            print ("Player 2 wins.")
        elif (player1 == 'scissors' and player2 == 'rock'):
            print ("Player 2 wins.")     
        else:
            print ("This is not a valid object selection.")
    else:
        print("What?")

Answer 2

while将重复循环内的任何内容，直到您给出中断条件。在您的情况下，您可能希望用while条件替换两个if循环，因此它不会对您的命令行发送垃圾邮件。

如果你希望它之后自动要求另一个游戏，你可以在游戏中制作一个方法，并提示另一个用户输入，询问另一个游戏是/否。

def game():
        if (player1 == 'rock' and player2 == 'scissors'):
            print ("Player 1 wins.")
        elif (player1 == 'rock' and player2 == 'rock'):
            print ("Tie")
        elif (player1 == 'scissors' and player2 == 'paper'):
            print ("Player 1 wins.")
        elif (player2 == 'scissors' and player2 == 'scissors'):
            print ("Tie")
        elif (player1 == 'paper' and player2 == 'paper'):
            print ("Tie")
        elif (player1 == 'paper' and player2 == 'scissors'):
            print ("Player 2 wins.")
        elif (player1 == 'rock'and player2 == 'paper'):
            print ("Player 2 wins.")
        elif (player1 == 'paper' and player2 == 'rock'):
            print ("Player 2 wins.")
        elif (player1 == 'scissors' and player2 == 'rock'):
            print ("Player 2 wins.")
        else:
            print ("This is not a valid object selection.")

play = input("Do you want to play?")
player1 = input("Rock, paper or scissors?")
player2 = input("Rock, paper or scissors?")
if play == "no":
    print("Why are you wasting my time? HUH?")
elif play == "yes":
    game()
    another = input("Want to play again?")
    if another == "yes":
        game()
    else:
        print("Okay bye then.")

当我在我的摇滚剪刀代码中使用while循环时，它会重复

2 个答案: