我的简单 python 游戏无法运行请指出我的错误

Question

from random import randint
import sys
l2= ["Rock", "Paper", "Scissors"]

computer = l2[randint(0,2)]
wins = 0
losses = 0

player = False

while player == False:
    player = input("Rock," "Paper," "Scissors")
    if player == computer:
        print("Tie")    
    elif player == "Rock":
        if computer == "Paper":
            print("You lose")
        else:
            print("You win Congrats")
    elif player == "Paper":
        if computer == "Scissors":
            print("You lose")
        else:
            print("You win Congrats")    
    elif player == "Scissors":
        if computer == "Rock":
            print("Try again")
        else:
            print("You won")
    elif player == "Rock":
        if computer == "Scissors":
            print("You won")
    elif player == "Paper":
        if computer == "Rock":
            print("You won")
    elif player == "Scissors":
        if computer == "Paper":
            print("You won")
    else:
        print("That is not a valid play Game Over for you")
    player = False
    computer = l2[randint(0,2)] 

我的代码由于某种原因无法运行，它只在终端上显示 else 语句。我不知道我做错了什么。请帮助我，初学者在这里学习python并开始做一些简单的项目。

Answer 1

首先，你不应该在同一个问题上添加 python 2.x 和 python 3.x 标签。为简单起见，我在 3.x 上尝试了您的代码，它部分有效。 其次，描述你的问题。不要只写“由于某种原因不会运行”。 第三，描述你想要达到的目标。我会为你做这个例子。

你的游戏是这样工作的：

1. 确定计算机做什么（工作）

2. 询问玩家做了什么（部分工作）

3. 比较播放器和计算机的操作并打印结果（不起作用）

4. 从 1 开始（不起作用）

你的第一个问题是你的while循环，你应该这样做：

while True:

为什么？只有当玩家输入错误的动作时，您才需要一个永无止境的循环，然后您想强制循环结束，您可以使用“break”语句来做到这一点。

您的第二个问题是，您使用了太多 if-else 构造，您不需要那么多来处理所有情况。这是我的工作 Python 3 代码：

from random import randint
import sys

l2 = ["Rock", "Paper", "Scissors"]

computer = None
player = None
wins = 0
losses = 0
ties = 0

def win():
    global wins
    wins += 1 
    print("You win")

def loss():
    global losses
    losses += 1
    print("You lose")

def tie():
    global ties
    ties += 1
    print("Game ended with a tie")

while True:
    # determine computer action
    computer = l2[randint(0,2)]
    player = input("Choose your action. Possible values are Rock, Paper or Scissors.\n")
    if player not in l2:
        print("Invalid choice, game will end now.")
        print("You won {0} games and lost {1} games, {2} game(s) ended with a tie.".format(wins, losses, ties))
        # ending the loop
        break
    if player == computer:
        tie()
    elif player == "Rock":
        if computer == "Paper":
            win()
        else:
            loss()
    elif player == "Paper":
        if computer == "Scissors":
            loss()
        else:
            win()   
    elif player == "Scissors":
        if computer == "Rock":
            loss()
        else:
            win()

如果您有任何问题，请提出。

编辑：您还应该考虑将函数和主循环移动到它自己的（游戏）类中，这样就不需要丑陋的“全局”语句来访问变量。

Answer 2

查看您的代码，大约一半的 if else 案例不起作用。你的代码有什么问题？该代码正在运行且正常运行。您可以消除一半的 elif 案例，因为它们永远不会执行。 if 和 elif 是顺序的。如果您仍然认为您的代码不起作用，请根据具体情况慢慢调试。如，将计算机设置为常数并测试所有情况。

我复制粘贴了您的代码，它至少对于明显的功能运行良好。删除不必要的 elif：

from random import randint
import sys
l2= ["Rock", "Paper", "Scissors"]

computer = l2[randint(0,2)] 

wins = 0
losses = 0

player = False

while player == False:
    player = input("Rock,Paper,Scissors: ") #clean up the query
    print("Computer had ",computer) #You use this to debug to make sure the logic is working. 
    print("You entered ",player) # another print to make it look nicer
    if player == computer:
        print("Tie")    
    elif player == "Rock":
        if computer == "Paper":
            print("You lose")
        else:
            print("You win Congrats")
    elif player == "Paper":
        if computer == "Scissors":
            print("You lose")
        else:
            print("You win Congrats")    
    elif player == "Scissors":
        if computer == "Rock":
            print("Try again")
        else:
            print("You won")
    else:
        print("That is not a valid play Game Over for you")
    player = False
    computer = l2[randint(0,2)] 

逻辑运行得很好。祝您好运，将其余功能添加到您的游戏中。

我建议尝试使用 upper() 来减少因拼写错误而导致的失败，也许还可以使用退出字符串命令。对于您似乎想要添加的赢/输功能，只需做一个添加到赢/输数字的标志。如果其他情况，您还可以在游戏中添加其他“命令”。好好尝试，祝你好运。

Answer 3

我还有一个剪刀石头布游戏

这是一些工作代码：

import random
computer = random.choice(["rock", "paper", "scissors"])
player = input("What do you choose?")
player = player.lower()
print(f"Computer picks {computer} and Player picks {player}")
if computer == player:
    print('Game is a tie, play again!')
if player == "paper":
  if computer == "rock":
    print('Player wins!')
  if computer == "scissors":
    print('Computer wins!')
if player == "rock":
  if computer == "paper":
    print('Computer wins!')
  if computer == "scissors":
    print('Player wins!')
if player == "scissors":
  if computer == "rock":
    print('Computer wins!')
  if computer == "paper":
    print('Player wins!')