帮我做一个python贪吃蛇的游戏代码

好的，以下是一个简单的Python贪吃蛇游戏代码：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置游戏窗口大小
window_width = 640
window_height = 480
game_display = pygame.display.set_mode((window_width, window_height))
pygame.display.set_caption('贪吃蛇游戏')

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

# 设置游戏时钟
clock = pygame.time.Clock()

# 定义贪吃蛇方块大小
block_size = 10

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


# 定义函数，显示消息
def message(msg, color):
    screen_text = font.render(msg, True, color)
    game_display.blit(screen_text, [window_width / 6, window_height / 3])


# 定义函数，绘制贪吃蛇
def snake(block_size, snake_list):
    for x in snake_list:
        pygame.draw.rect(game_display, black, [x[0], x[1], block_size, block_size])


# 定义游戏循环
def game_loop():
    game_exit = False
    game_over = False

    # 定义贪吃蛇初始位置
    lead_x = window_width / 2
    lead_y = window_height / 2
    lead_x_change = 0
    lead_y_change = 0

    # 定义随机食物位置
    rand_food_x = round(random.randrange(0, window_width - block_size) / 10.0) * 10.0
    rand_food_y = round(random.randrange(0, window_height - block_size) / 10.0) * 10.0

    # 定义贪吃蛇长度
    snake_list = []
    snake_length = 1

    while not game_exit:

        while game_over:
            game_display.fill(white)
            message("游戏结束，按C重新开始，按Q退出", red)
            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():
            if event.type == pygame.QUIT:
                game_exit = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    lead_x_change = -block_size
                    lead_y_change = 0
                elif event.key == pygame.K_RIGHT:
                    lead_x_change = block_size
                    lead_y_change = 0
                elif event.key == pygame.K_UP:
                    lead_y_change = -block_size
                    lead_x_change = 0
                elif event.key == pygame.K_DOWN:
                    lead_y_change = block_size
                    lead_x_change = 0

        # 判断是否超出边界
        if lead_x >= window_width or lead_x < 0 or lead_y >= window_height or lead_y < 0:
            game_over = True

        # 更新贪吃蛇位置
        lead_x += lead_x_change
        lead_y += lead_y_change

        # 绘制游戏窗口
        game_display.fill(white)
        pygame.draw.rect(game_display, red, [rand_food_x, rand_food_y, block_size, block_size])

        # 更新贪吃蛇长度
        snake_head = []
        snake_head.append(lead_x)
        snake_head.append(lead_y)
        snake_list.append(snake_head)
        if len(snake_list) > snake_length:
            del snake_list[0]

        # 判断是否吃到食物
        if lead_x == rand_food_x and lead_y == rand_food_y:
            rand_food_x = round(random.randrange(0, window_width - block_size) / 10.0) * 10.0
            rand_food_y = round(random.randrange(0, window_height - block_size) / 10.0) * 10.0
            snake_length += 1

        # 判断是否碰到自己
        for segment in snake_list[:-1]:
            if segment == snake_head:
                game_over = True

        # 绘制贪吃蛇
        snake(block_size, snake_list)

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

        # 设置游戏时钟
        clock.tick(10)

    # 退出pygame
    pygame.quit()

    # 退出程序
    quit()


# 启动游戏循环
game_loop()

希望可以帮到你！