石头剪刀布用Python

以下是一个简单的石头剪刀布游戏的 Python 代码示例：

import random

# 定义游戏结果的常量
PLAYER_WIN = 1
COMPUTER_WIN = -1
TIE = 0

# 定义选项的常量
ROCK = 'rock'
PAPER = 'paper'
SCISSORS = 'scissors'

# 定义选项的列表
OPTIONS = [ROCK, PAPER, SCISSORS]

# 定义玩家输入函数
def get_player_choice():
    while True:
        choice = input("Enter your choice (rock/paper/scissors): ")
        if choice in OPTIONS:
            return choice
        else:
            print("Invalid choice. Please try again.")

# 定义电脑选择函数
def get_computer_choice():
    return random.choice(OPTIONS)

# 定义判断胜负的函数
def get_result(player_choice, computer_choice):
    if player_choice == computer_choice:
        return TIE
    elif player_choice == ROCK and computer_choice == SCISSORS:
        return PLAYER_WIN
    elif player_choice == PAPER and computer_choice == ROCK:
        return PLAYER_WIN
    elif player_choice == SCISSORS and computer_choice == PAPER:
        return PLAYER_WIN
    else:
        return COMPUTER_WIN

# 主游戏循环
while True:
    player_choice = get_player_choice()
    computer_choice = get_computer_choice()

    result = get_result(player_choice, computer_choice)

    print("You chose:", player_choice)
    print("Computer chose:", computer_choice)

    if result == PLAYER_WIN:
        print("You win!")
    elif result == COMPUTER_WIN:
        print("You lose!")
    else:
        print("It's a tie.")

    play_again = input("Do you want to play again? (y/n): ")
    if play_again.lower() != 'y':
        break

print("Thanks for playing!")

运行上述代码，即可开始石头剪刀布游戏。