用Python写一个简单的贪吃蛇游戏

非常感谢您的提问，我可以回答这个问题。以下是一个简单的 Python 贪吃蛇游戏的代码示例：

import pygame
import random

# 游戏窗口大小
WINDOW_WIDTH = 640
WINDOW_HEIGHT = 480

# 贪吃蛇方块大小
BLOCK_SIZE = 20

# 颜色定义
BLACK = (, , )
WHITE = (255, 255, 255)
GREEN = (, 255, )
RED = (255, , )

# 初始化 Pygame
pygame.init()

# 创建游戏窗口
window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption('贪吃蛇')

# 创建时钟对象
clock = pygame.time.Clock()

# 定义贪吃蛇类
class Snake:
    def __init__(self):
        self.body = [(4, 1), (3, 1), (2, 1), (1, 1)]
        self.direction = 'right'

    def move(self):
        head = self.body[]
        if self.direction == 'right':
            new_head = (head[] + 1, head[1])
        elif self.direction == 'left':
            new_head = (head[] - 1, head[1])
        elif self.direction == 'up':
            new_head = (head[], head[1] - 1)
        elif self.direction == 'down':
            new_head = (head[], head[1] + 1)
        self.body.insert(, new_head)
        self.body.pop()

    def draw(self):
        for block in self.body:
            rect = pygame.Rect(block[] * BLOCK_SIZE, block[1] * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE)
            pygame.draw.rect(window, GREEN, rect)

    def eat(self, food):
        if self.body[] == food:
            self.body.append(self.body[-1])

    def collide(self):
        head = self.body[]
        if head[] <  or head[] >= WINDOW_WIDTH // BLOCK_SIZE:
            return True
        if head[1] <  or head[1] >= WINDOW_HEIGHT // BLOCK_SIZE:
            return True
        for block in self.body[1:]:
            if head == block:
                return True
        return False

# 定义食物类
class Food:
    def __init__(self):
        self.position = (random.randint(, WINDOW_WIDTH // BLOCK_SIZE - 1), random.randint(, WINDOW_HEIGHT // BLOCK_SIZE - 1))

    def draw(self):
        rect = pygame.Rect(self.position[] * BLOCK_SIZE, self.position[1] * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE)
        pygame.draw.rect(window, RED, rect)

# 创建贪吃蛇和食物对象
snake = Snake()
food = Food()

# 游戏循环
while True:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_RIGHT and snake.direction != 'left':
                snake.direction = 'right'
            elif event.key == pygame.K_LEFT and snake.direction != 'right':
                snake.direction = 'left'
            elif event.key == pygame.K_UP and snake.direction != 'down':
                snake.direction = 'up'
            elif event.key == pygame.K_DOWN and snake.direction != 'up':
                snake.direction = 'down'

    # 移动贪吃蛇
    snake.move()

    # 判断是否吃到食物
    snake.eat(food.position)

    # 判断是否碰撞到边界或自身
    if snake.collide():
        pygame.quit()
        exit()

    # 绘制游戏界面
    window.fill(BLACK)
    snake.draw()
    food.draw()
    pygame.display.update()

    # 控制游戏帧率
    clock.tick(10)

希望这个代码示例能够帮助您编写贪吃蛇游戏。