帮我用python写一个贪吃蛇

很高兴回答您的问题。以下是一个简单的贪吃蛇游戏的 Python 代码：

import pygame
import random

# 初始化 Pygame
pygame.init()

# 设置游戏窗口大小
window_width = 500
window_height = 500
window = pygame.display.set_mode((window_width, window_height))

# 设置游戏标题
pygame.display.set_caption("贪吃蛇游戏")

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

# 定义贪吃蛇的初始位置和大小
snake_block_size = 10
snake_speed = 15
snake_list = []
snake_length = 1
snake_x = window_width / 2
snake_y = window_height / 2

# 定义食物的初始位置和大小
food_block_size = 10
food_x = round(random.randrange(, window_width - food_block_size) / 10.) * 10.
food_y = round(random.randrange(, window_height - food_block_size) / 10.) * 10.

# 定义函数，用于显示贪吃蛇和食物
def draw_snake(snake_block_size, snake_list):
    for x in snake_list:
        pygame.draw.rect(window, black, [x[], x[1], snake_block_size, snake_block_size])

def draw_food(food_block_size, food_x, food_y):
    pygame.draw.rect(window, red, [food_x, food_y, food_block_size, food_block_size])

# 游戏循环
game_over = False
clock = pygame.time.Clock()

while not game_over:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True

    # 获取键盘输入，控制贪吃蛇移动方向
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        snake_x -= snake_block_size
    elif keys[pygame.K_RIGHT]:
        snake_x += snake_block_size
    elif keys[pygame.K_UP]:
        snake_y -= snake_block_size
    elif keys[pygame.K_DOWN]:
        snake_y += snake_block_size

    # 判断贪吃蛇是否吃到了食物
    if snake_x == food_x and snake_y == food_y:
        food_x = round(random.randrange(, window_width - food_block_size) / 10.) * 10.
        food_y = round(random.randrange(, window_height - food_block_size) / 10.) * 10.
        snake_length += 1

    # 更新贪吃蛇的位置
    snake_head = []
    snake_head.append(snake_x)
    snake_head.append(snake_y)
    snake_list.append(snake_head)
    if len(snake_list) > snake_length:
        del snake_list[]

    # 判断贪吃蛇是否碰到了边界或自己的身体
    for x in snake_list[:-1]:
        if x == snake_head:
            game_over = True
    if snake_x <  or snake_x >= window_width or snake_y <  or snake_y >= window_height:
        game_over = True

    # 绘制游戏界面
    window.fill(white)
    draw_snake(snake_block_size, snake_list)
    draw_food(food_block_size, food_x, food_y)
    pygame.display.update()

    # 控制游戏帧率
    clock.tick(snake_speed)

# 退出 Pygame
pygame.quit()

希望这个代码能够帮助您完成贪吃蛇游戏的编写。