用python写一个贪吃蛇

当然可以！以下是一个使用Python编写的简单贪吃蛇游戏示例：

import pygame
import random

# 游戏窗口的宽度和高度
WIDTH = 800
HEIGHT = 600

# 贪吃蛇方块的大小
BLOCK_SIZE = 20

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

# 初始化游戏
pygame.init()
window = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("贪吃蛇")
clock = pygame.time.Clock()


# 贪吃蛇类
class Snake:
    def __init__(self):
        self.body = [(WIDTH / 2, HEIGHT / 2)]
        self.direction = "right"

    def move(self):
        x, y = self.body[0]
        if self.direction == "up":
            y -= BLOCK_SIZE
        elif self.direction == "down":
            y += BLOCK_SIZE
        elif self.direction == "left":
            x -= BLOCK_SIZE
        elif self.direction == "right":
            x += BLOCK_SIZE

        self.body.insert(0, (x, y))
        self.body.pop()

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

    def draw(self):
        for x, y in self.body:
            pygame.draw.rect(window, WHITE, (x, y, BLOCK_SIZE, BLOCK_SIZE))


# 食物类
class Food:
    def __init__(self):
        self.x = random.randint(0, WIDTH - BLOCK_SIZE)
        self.y = random.randint(0, HEIGHT - BLOCK_SIZE)

    def draw(self):
        pygame.draw.rect(window, 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
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        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()

    # 检查是否吃到食物
    if snake.body[0] == (food.x, food.y):
        snake.body.append((food.x, food.y))
        food = Food()

    # 检查是否撞到自己的身体
    if snake.body[0] in snake.body[1:]:
        running = False

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

    # 控制游戏速度
    clock.tick(10)

# 退出游戏
pygame.quit()

你可以将以上代码保存为一个 Python 文件，运行后将会弹出一个窗口，即可开始游戏。你可以使用上下左右箭头来控制贪吃蛇的移动方向，目标是吃到食物并尽可能地增长身体长度。如有需要，你可以根据自己的需求进行进一步的修改和扩展。