写贪吃蛇用python

好的，下面是一个简单的贪吃蛇游戏，使用 Python 语言编写。

import pygame
import random

# 定义颜色
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

# 定义方块大小
BLOCK_SIZE = 20

# 初始化 pygame
pygame.init()

# 设置窗口大小
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600
WINDOW_SIZE = (WINDOW_WIDTH, WINDOW_HEIGHT)
screen = pygame.display.set_mode(WINDOW_SIZE)

# 设置窗口标题
pygame.display.set_caption("贪吃蛇")

# 设置时钟对象
clock = pygame.time.Clock()

# 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):
        head_x, head_y = self.body[0]
        if self.direction == "up":
            new_head = (head_x, head_y - BLOCK_SIZE)
        elif self.direction == "down":
            new_head = (head_x, head_y + BLOCK_SIZE)
        elif self.direction == "left":
            new_head = (head_x - BLOCK_SIZE, head_y)
        elif self.direction == "right":
            new_head = (head_x + BLOCK_SIZE, head_y)
        self.body.insert(0, new_head)
        self.body.pop()

    def change_direction(self, direction):
        if direction == "up" and self.direction != "down":
            self.direction = "up"
        elif direction == "down" and self.direction != "up":
            self.direction = "down"
        elif direction == "left" and self.direction != "right":
            self.direction = "left"
        elif direction == "right" and self.direction != "left":
            self.direction = "right"

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

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

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

# 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_UP:
                snake.change_direction("up")
            elif event.key == pygame.K_DOWN:
                snake.change_direction("down")
            elif event.key == pygame.K_LEFT:
                snake.change_direction("left")
            elif event.key == pygame.K_RIGHT:
                snake.change_direction("right")

    # 移动贪吃蛇
    snake.move()

    # 判断是否吃到食物
    if snake.body[0][0] == food.x and snake.body[0][1] == food.y:
        snake.body.append((food.x, food.y))
        food = Food()

    # 判断是否碰到边界或自己的身体
    if snake.body[0][0] < 0 or snake.body[0][0] >= WINDOW_WIDTH \
            or snake.body[0][1] < 0 or snake.body[0][1] >= WINDOW_HEIGHT \
            or snake.body[0] in snake.body[1:]:
        pygame.quit()
        exit()

    # 绘制背景和贪吃蛇和食物
    screen.fill(BLACK)
    snake.draw(screen)
    food.draw(screen)

    # 刷新屏幕
    pygame.display.flip()

    # 控制帧率
    clock.tick(10)

这是一个简单的贪吃蛇游戏，其中包括贪吃蛇类和食物类，以及游戏循环和事件处理等。你可以将代码复制到你的 Python 编辑器中执行，或者将代码保存为 `.py` 文件并在命令行中运行。