Python石头剪刀布游戏添加重启功能后故障，请求代码错误排查

我是编程新手，之前的Python石头剪刀布游戏运行正常，但尝试添加按'r'键重启游戏的功能后程序出现异常。以下是未添加重启功能时可正常运行的代码：

import random
options = ('Rock','Paper','Scissors')
player_score = 0
computer_score = 0

def game(player, computer):
    
    global player_score
    global computer_score
    
    if player == computer:
        print(f"Both You and the Computer chose the same option {player}, It's a tie!")
        
    elif player == 'Rock':
        if computer == 'Paper':
            player_score += 1
            print(f'Paper covers the rock, you win 1 point, your score is {player_score}.')
        elif computer == 'Scissors':
            player_score += 1
            print(f'Rock smashes the scissors, you win 1 point, your score is {player_score}.')
            
    elif player == 'Scissors':
        if computer == 'Rock':
            computer_score += 1
            print(f'Rock smaches the scissors, computer wins 1 point, your score is {player_score}')
        elif computer == 'Paper':
            player_score += 1
            print(f'Scissors cut the paper, you win 1 point, your score is {player_score}.')
            
    elif player == 'Paper':
        if computer == 'Rock':
            player_score += 1
            print(f'Paper covers the rock, you win 1 point, your score is {player_score}.')
        elif computer == 'Scissors':
            computer_score += 1
            print(f'Scissors cut the paper, computer wins 1 point, your score is {player_score}.')
            

while True:
    if player_score == 10:
        print('*' * 30, '\nYour Score reached 10, You Win!', '*'*30)
        exit()
    elif computer_score == 10:
        print('*' * 30, '\nComputer Score reached 10, You Lose!', '*'*30)
        exit()
        
    player_choice = input('Please choose Rock, Paper, Scissor or Q for quit: ').lower()
    computer_choice = random.choice(options)
    
    if player_choice == 'quit':
        print('FINISH!')
        exit()
    elif not player_choice in options:
        print('Wrong Option!, please try again')
                
    else:
        game(player_choice, computer_choice)

常见错误点分析 #

添加'r'重启功能时，容易出现以下问题导致程序异常：

• 分数未重置：仅重启循环但未将player_score和computer_score归零，新旧分数叠加后，游戏终止条件逻辑完全混乱。
• 输入判断顺序错误：把'r'的判断放在有效选项检查之后，导致输入'r'被判定为错误选项。
• 原代码隐藏bug：输入转为小写后，与大写的options元组匹配失败（比如输入'rock'会被当成错误选项），这也是添加功能后异常的潜在诱因。

修正后的完整代码 #

import random
# 改为小写，匹配输入的小写格式
options = ('rock', 'paper', 'scissors')
player_score = 0
computer_score = 0

def game(player, computer):
    global player_score
    global computer_score
    
    if player == computer:
        print(f"你和电脑都选了{player}，平局！")
    elif player == 'rock':
        if computer == 'paper':
            computer_score += 1
            print(f'纸包住石头，电脑得1分，你的分数是{player_score}。')
        elif computer == 'scissors':
            player_score += 1
            print(f'石头砸碎剪刀，你得1分，你的分数是{player_score}。')
    elif player == 'scissors':
        if computer == 'rock':
            computer_score += 1
            print(f'石头砸碎剪刀，电脑得1分，你的分数是{player_score}。')
        elif computer == 'paper':
            player_score += 1
            print(f'剪刀剪碎纸，你得1分，你的分数是{player_score}。')
    elif player == 'paper':
        if computer == 'rock':
            player_score += 1
            print(f'纸包住石头，你得1分，你的分数是{player_score}。')
        elif computer == 'scissors':
            computer_score += 1
            print(f'剪刀剪碎纸，电脑得1分，你的分数是{player_score}。')

while True:
    if player_score == 10:
        print('*' * 30, '\n你的分数达到10分，你赢了！', '*'*30)
        break
    elif computer_score == 10:
        print('*' * 30, '\n电脑分数达到10分，你输了！', '*'*30)
        break
        
    player_choice = input('请选择 rock、paper、scissors，按q退出，按r重启游戏：').lower()
    # 优先处理重启和退出逻辑
    if player_choice in ('q', 'quit'):
        print('游戏结束！')
        break
    if player_choice == 'r':
        player_score = 0
        computer_score = 0
        print('游戏已重启，分数已清零！')
        continue  # 跳过后续逻辑，直接进入下一轮循环
    
    # 检查输入有效性
    if player_choice not in options:
        print('无效选项，请重新输入！')
        continue
    
    computer_choice = random.choice(options)
    game(player_choice, computer_choice)

修正说明 #

1. 将options改为小写，与输入的小写格式统一，解决原代码的匹配bug。
2. 把'r'重启的判断放在有效选项检查之前，确保输入'r'能被正确识别。
3. 重启时重置分数为0，并使用continue跳过后续逻辑，直接进入下一轮循环。
4. 将exit()改为break，更优雅地终止循环，避免强制退出程序。
5. 提示文本改为中文，提升操作友好度。

内容的提问来源于stack exchange，提问作者remoo heshmat