写出贪吃蛇的python代码

好的，以下是一个基于Pygame库的简单贪吃蛇游戏的Python代码：

import pygame
import time
import random
 
pygame.init()
 
width = 800
height = 600
 
# 定义颜色
white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)
 
# 初始化游戏窗口
gameDisplay = pygame.display.set_mode((width, height))
pygame.display.set_caption('Snake Game')
 
clock = pygame.time.Clock()
 
snake_block = 10
snake_speed = 15
 
font_style = pygame.font.SysFont(None, 50)
 
def message(msg,color):
    mesg = font_style.render(msg, True, color)
    gameDisplay.blit(mesg, [width / 6, height / 3])
 
 
def gameLoop():  # 游戏主循环
    game_over = False
    game_close = False
 
    x1 = width / 2
    y1 = height / 2
 
    x1_change = 0       
    y1_change = 0
 
    foodx = round(random.randrange(0, width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, height - snake_block) / 10.0) * 10.0
    
    while not game_over:
 
        while game_close == True:
            gameDisplay.fill(white)
            message("You Lost! Press Q-Quit or C-Play Again",red)
            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
                    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
 
        if x1 >= width or x1 < 0 or y1 >= height or y1 < 0:
            game_close = True
            
        x1 += x1_change
        y1 += y1_change
        gameDisplay.fill(black)
        pygame.draw.rect(gameDisplay, green, [foodx, foody, snake_block, snake_block])
        pygame.draw.rect(gameDisplay, white, [x1, y1, snake_block, snake_block])
        pygame.display.update()
 
        if x1 == foodx and y1 == foody:
            print("Yummy!!")
        clock.tick(snake_speed)
 
    pygame.quit()
    quit()
 
gameLoop()

请注意，这只是一个基本的实现，您可以根据自己的需要和想法修改和改进代码。