Python写一个贪吃蛇

好的，下面是一个简单的贪吃蛇的Python代码，希望能帮到你：

import pygame
import random

# 初始化pygame
pygame.init()

# 游戏区域大小
width = 500
height = 500

# 创建游戏窗口
screen = pygame.display.set_mode((width, height))

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

# 定义贪吃蛇移动的速度
speed = 10

# 定义贪吃蛇的颜色
snake_color = (0, 255, 0)

# 定义食物的颜色
food_color = (255, 0, 0)

# 定义贪吃蛇的初始位置和长度
snake = [(250, 250), (240, 250), (230, 250)]
snake_length = len(snake)

# 定义食物的位置
food_x = random.randint(0, (width - 10) // 10) * 10
food_y = random.randint(0, (height - 10) // 10) * 10

# 定义贪吃蛇的初始方向
direction = "right"

# 定义游戏结束的变量
game_over = False

# 游戏循环
while not game_over:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT and direction != "right":
                direction = "left"
            elif event.key == pygame.K_RIGHT and direction != "left":
                direction = "right"
            elif event.key == pygame.K_UP and direction != "down":
                direction = "up"
            elif event.key == pygame.K_DOWN and direction != "up":
                direction = "down"

    # 移动贪吃蛇
    head = snake[0]
    if direction == "right":
        new_head = (head[0] + speed, head[1])
    elif direction == "left":
        new_head = (head[0] - speed, head[1])
    elif direction == "up":
        new_head = (head[0], head[1] - speed)
    elif direction == "down":
        new_head = (head[0], head[1] + speed)
    snake.insert(0, new_head)
    if len(snake) > snake_length:
        snake.pop()

    # 判断是否吃到食物
    if head[0] == food_x and head[1] == food_y:
        food_x = random.randint(0, (width - 10) // 10) * 10
        food_y = random.randint(0, (height - 10) // 10) * 10
        snake_length += 1

    # 绘制游戏界面
    screen.fill((0, 0, 0))
    for pos in snake:
        pygame.draw.rect(screen, snake_color, pygame.Rect(pos[0], pos[1], 10, 10))
    pygame.draw.rect(screen, food_color, pygame.Rect(food_x, food_y, 10, 10))
    pygame.display.update()

    # 判断游戏是否结束
    if head[0] < 0 or head[0] >= width or head[1] < 0 or head[1] >= height:
        game_over = True
    for pos in snake[1:]:
        if head[0] == pos[0] and head[1] == pos[1]:
            game_over = True

# 退出pygame
pygame.quit()

这个游戏比较简单，贪吃蛇的移动速度和游戏界面大小可以根据实际需要调整。