我想设置一款最简单的贪吃蛇游戏，请你帮我给出代码

当然可以帮你概述一下如何创建一个基本的贪吃蛇游戏。这里我会提供一个使用Python语言的基本框架，它使用了Pygame库来处理图形界面：

import pygame
import sys

# 初始化pygame
pygame.init()

# 设置窗口大小
screen_width = 400
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("贪吃蛇")

snake_color = (0, 255, 0)  # 绿色
food_color = (255, 0, 0)   # 红色

snake_pos = [(screen_width // 2, screen_height // 2)]
snake_dir = [0, 1]         # 向上

# 蛇身体部分的列表
snake_body = [snake_pos]

clock = pygame.time.Clock()
food_spawned = False

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP and snake_dir != [0, -1]:
                snake_dir = [-1, 0]
            elif event.key == pygame.K_DOWN and snake_dir != [0, 1]:
                snake_dir = [1, 0]
            elif event.key == pygame.K_LEFT and snake_dir != [1, 0]:
                snake_dir = [0, -1]
            elif event.key == pygame.K_RIGHT and snake_dir != [-1, 0]:
                snake_dir = [0, 1]

    snake_pos_new = [snake_pos[0][0] + snake_dir[0], snake_pos[0][1] + snake_dir[1]]
    
    # 检查新位置是否越界或撞到自己
    if snake_pos_new[0] < 0 or snake_pos_new[0] >= screen_width or \
       snake_pos_new[1] < 0 or snake_pos_new[1] >= screen_height or \
       snake_pos_new in snake_body[:-1]:
        print("Game Over!")
        pygame.quit()
        sys.exit()
    
    snake_body.append(snake_pos_new)
    snake_body.pop(0)

    if not food_spawned:
        food_x = random.randint(0, screen_width - 1)
        food_y = random.randint(0, screen_height - 1)
        while (food_x, food_y) in snake_body:
            food_x = random.randint(0, screen_width - 1)
            food_y = random.randint(0, screen_height - 1)
        food_spawned = True
    else:
        food_pos = (food_x, food_y)
        
    screen.fill((0, 0, 0))  # 渲染黑色背景
    pygame.draw.rect(screen, snake_color, pygame.Rect(snake_pos[0], (10, 10)))  # 绘制蛇
    pygame.draw.rect(screen, food_color, pygame.Rect(food_pos, (10, 10)))     # 绘制食物
    
    pygame.display.update()
    clock.tick(10)  # 控制帧率

# 结束游戏循环

这只是一个基础版的贪吃蛇游戏，它没有复杂的碰撞检测或得分系统。如果你想增加更多功能，比如食物生成、碰撞检测等，你需要继续完善这个代码。