python做一个贪吃蛇

好的，下面是一个简单的贪吃蛇游戏的Python代码：

import pygame
import random

# 定义窗口大小
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600
# 定义贪吃蛇的大小
SNAKE_SIZE = 20
# 定义食物的大小
FOOD_SIZE = 20
# 定义贪吃蛇移动的速度
SPEED = 20
# 定义颜色
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

# 初始化pygame
pygame.init()
# 创建窗口
screen = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
# 设置窗口标题
pygame.display.set_caption("贪吃蛇")

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

    def move(self):
        # 获取贪吃蛇头部的坐标
        x, y = self.body[0]
        if self.direction == 'up':
            y -= SNAKE_SIZE
        elif self.direction == 'down':
            y += SNAKE_SIZE
        elif self.direction == 'left':
            x -= SNAKE_SIZE
        elif self.direction == 'right':
            x += SNAKE_SIZE
        # 将新的头部坐标插入到body列表中的第一个位置
        self.body.insert(0, (x, y))
        # 删除body列表中的最后一个坐标
        self.body.pop()

    def draw(self):
        for x, y in self.body:
            pygame.draw.rect(screen, GREEN, (x, y, SNAKE_SIZE, SNAKE_SIZE))

    def eat(self, food):
        x1, y1 = self.body[0]
        x2, y2 = food
        if x1 == x2 and y1 == y2:
            # 如果贪吃蛇吃到了食物，就将食物添加到body列表的头部
            self.body.insert(0, food)
            return True
        else:
            return False

# 定义食物类
class Food:
    def __init__(self):
        self.x = random.randint(0, WINDOW_WIDTH - FOOD_SIZE)
        self.y = random.randint(0, WINDOW_HEIGHT - FOOD_SIZE)

    def draw(self):
        pygame.draw.rect(screen, RED, (self.x, self.y, FOOD_SIZE, FOOD_SIZE))

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

# 游戏循环
while True:
    # 处理游戏事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            # 如果点击了窗口的关闭按钮，则退出游戏
            pygame.quit()
            exit()

        if event.type == pygame.KEYDOWN:
            # 处理键盘事件
            if 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'
            elif event.key == pygame.K_LEFT and snake.direction != 'right':
                snake.direction = 'left'
            elif event.key == pygame.K_RIGHT and snake.direction != 'left':
                snake.direction = 'right'

    # 移动贪吃蛇
    snake.move()

    # 判断贪吃蛇是否吃到了食物
    if snake.eat((food.x, food.y)):
        # 如果贪吃蛇吃到了食物，则重新生成食物
        food = Food()

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

    # 判断贪吃蛇是否碰到了边界或者自己的身体
    x, y = snake.body[0]
    if x < 0 or x + SNAKE_SIZE > WINDOW_WIDTH or y < 0 or y + SNAKE_SIZE > WINDOW_HEIGHT:
        print("Game Over!")
        pygame.quit()
        exit()

    for i in range(1, len(snake.body)):
        if snake.body[i] == snake.body[0]:
            print("Game Over!")
            pygame.quit()
            exit()

    # 控制游戏速度
    pygame.time.Clock().tick(SPEED)

运行上述代码即可在pygame窗口中看到贪吃蛇游戏。