用Python写贪吃蛇

好的，下面是一个简单的Python贪吃蛇游戏的代码：

import pygame
import random

# 初始化
pygame.init()

# 窗口大小
window_width = 500
window_height = 500

# 创建窗口
window = pygame.display.set_mode((window_width, window_height))
pygame.display.set_caption('贪吃蛇')

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

# 字体
font = pygame.font.SysFont(None, 25)

# 更新分数
def update_score(score):
    score_text = font.render('Score: ' + str(score), True, black)
    window.blit(score_text, [0, 0])

# 绘制贪吃蛇
def draw_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(window, black, [x[0], x[1], snake_block, snake_block])

# 主函数
def game_loop():
    # 蛇的初始位置
    x1 = window_width/2
    y1 = window_height/2
    x1_change = 0
    y1_change = 0
    snake_block = 10
    snake_speed = 20

    # 食物的初始位置
    foodx = round(random.randrange(0, window_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, window_height - snake_block) / 10.0) * 10.0

    # 蛇身列表
    snake_List = []
    Length_of_snake = 1

    game_exit = False
    game_over = False

    # 游戏主循环
    while not game_exit:

        while game_over == True:
            # 游戏结束
            window.fill(white)
            game_over_text = font.render('Game Over! Press Q-Quit or C-Play Again', True, black)
            window.blit(game_over_text, [window_width/6, window_height/3])
            update_score(Length_of_snake-1)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_exit = True
                        game_over = False
                    if event.key == pygame.K_c:
                        game_loop()

        for event in pygame.event.get():
            # 退出游戏
            if event.type == pygame.QUIT:
                game_exit = True
            # 控制蛇的移动
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        # 边界碰撞检测
        if x1 >= window_width or x1 < 0 or y1 >= window_height or y1 < 0:
            game_over = True

        # 更新蛇的位置
        x1 += x1_change
        y1 += y1_change

        # 绘制游戏背景
        window.fill(white)

        # 绘制食物
        pygame.draw.rect(window, red, [foodx, foody, snake_block, snake_block])

        # 更新蛇身列表
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        # 蛇头和蛇身碰撞检测
        for x in snake_List[:-1]:
            if x == snake_Head:
                game_over = True

        # 绘制贪吃蛇
        draw_snake(snake_block, snake_List)

        # 更新分数
        update_score(Length_of_snake-1)

        # 更新游戏窗口
        pygame.display.update()

        # 食物和蛇头碰撞检测
        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, window_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, window_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1

        # 控制游戏速度
        pygame.time.Clock().tick(snake_speed)

    # 退出游戏
    pygame.quit()
    quit()

# 运行游戏
game_loop()

运行代码，即可看到贪吃蛇游戏的窗口。使用方向键控制贪吃蛇的移动，吃到食物得分加一，碰到边界或者自己的身体游戏结束。