用python写一个贪吃蛇

好的，以下是一个简单的贪吃蛇游戏实现，你可以在你的Python编程环境中运行它：

import pygame
import random

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

# 设置屏幕大小
screen_width = 600
screen_height = 400

# 初始化 Pygame 库
pygame.init()

# 创建屏幕
game_display = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption('Greedy Snake')

# 定义游戏时钟
clock = pygame.time.Clock()

# 定义贪吃蛇的大小和速度
snake_block_size = 10
snake_speed = 15

# 定义字体
font_style = pygame.font.SysFont(None, 30)

# 显示得分
def show_score(score):
    score_font = font_style.render("Score: " + str(score), True, white)
    game_display.blit(score_font, [0, 0])

# 画出贪吃蛇
def draw_snake(snake_block_size, snake_list):
    for x in snake_list:
        pygame.draw.rect(game_display, black, [x[0], x[1], snake_block_size, snake_block_size])

# 显示消息
def message(msg, color):
    message_font = font_style.render(msg, True, color)
    game_display.blit(message_font, [screen_width / 6, screen_height / 3])

# 主函数
def gameLoop():
    game_over = False
    game_close = False

    # 设置贪吃蛇的初始化位置
    x1 = screen_width / 2
    y1 = screen_height / 2

    # 设置贪吃蛇的移动速度和方向
    x1_change = 0
    y1_change = 0

    # 创建初始贪吃蛇
    snake_List = []
    Length_of_snake = 1

    # 设置食物的随机位置
    foodx = round(random.randrange(0, screen_width - snake_block_size) / 10.0) * 10.0
    foody = round(random.randrange(0, screen_height - snake_block_size) / 10.0) * 10.0

    while not game_over:

        while game_close:
            game_display.fill(black)
            message("You Lost! Press Q-Quit or C-Play Again", red)
            show_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_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block_size
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block_size
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block_size
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block_size
                    x1_change = 0

        # 当贪吃蛇撞墙时游戏结束
        if x1 >= screen_width or x1 < 0 or y1 >= screen_height or y1 < 0:
            game_close = True

        # 移动贪吃蛇的位置
        x1 += x1_change
        y1 += y1_change

        # 绘制食物
        game_display.fill(white)
        pygame.draw.rect(game_display, red, [foodx, foody, snake_block_size, snake_block_size])

        # 把贪吃蛇插入 snake_List 中
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)

        # 当贪吃蛇身体长度过长时游戏结束
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        # 当贪吃蛇吃到食物时，生成一个新的食物
        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True

        draw_snake(snake_block_size, snake_List)
        show_score(Length_of_snake - 1)
        pygame.display.update()

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, screen_width - snake_block_size) / 10.0) * 10.0
            foody = round(random.randrange(0, screen_height - snake_block_size) / 10.0) * 10.0
            Length_of_snake += 1

        clock.tick(snake_speed)

    # 退出 Pygame 库
    pygame.quit()

    # 退出 Python
    quit()

# 运行主函数
gameLoop()

希望这个代码能对你有所帮助！