能用python写一个贪吃蛇游戏吗

当然可以！以下是一个简单的贪吃蛇游戏的Python代码示例：

import pygame
import random

# 初始化
pygame.init()

# 屏幕大小
SCREEN_WIDTH = 600
SCREEN_HEIGHT = 600

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

# 创建屏幕
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("贪吃蛇")

# 蛇的初始位置和大小
snake_pos = [[250, 250], [240, 250], [230, 250], [220, 250]]
snake_size = 10

# 食物的初始位置和大小
food_pos = [random.randrange(1, SCREEN_WIDTH // 10) * 10, random.randrange(1, SCREEN_HEIGHT // 10) * 10]
food_size = 10

# 蛇的移动方向
direction = "RIGHT"

# 控制游戏循环的变量
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:
                direction = "LEFT"
            elif event.key == pygame.K_RIGHT:
                direction = "RIGHT"
            elif event.key == pygame.K_UP:
                direction = "UP"
            elif event.key == pygame.K_DOWN:
                direction = "DOWN"

    # 移动蛇头
    if direction == "LEFT":
        head = [snake_pos[0][0] - snake_size, snake_pos[0][1]]
    elif direction == "RIGHT":
        head = [snake_pos[0][0] + snake_size, snake_pos[0][1]]
    elif direction == "UP":
        head = [snake_pos[0][0], snake_pos[0][1] - snake_size]
    elif direction == "DOWN":
        head = [snake_pos[0][0], snake_pos[0][1] + snake_size]

    # 添加蛇头
    snake_pos.insert(0, head)

    # 判断是否吃到食物
    if snake_pos[0] == food_pos:
        food_pos = [random.randrange(1, SCREEN_WIDTH // 10) * 10, random.randrange(1, SCREEN_HEIGHT // 10) * 10]
    else:
        snake_pos.pop()

    # 绘制屏幕
    screen.fill(BLACK)
    pygame.draw.rect(screen, GREEN, [food_pos[0], food_pos[1], food_size, food_size])
    for pos in snake_pos:
        pygame.draw.rect(screen, WHITE, [pos[0], pos[1], snake_size, snake_size])

    # 更新屏幕
    pygame.display.update()

    # 判断游戏是否结束
    if snake_pos[0][0] < 0 or snake_pos[0][0] > SCREEN_WIDTH - snake_size or snake_pos[0][1] < 0 or snake_pos[0][1] > SCREEN_HEIGHT - snake_size:
        game_over = True

    for pos in snake_pos[1:]:
        if snake_pos[0] == pos:
            game_over = True

    # 控制游戏速度
    pygame.time.Clock().tick(20)

# 退出游戏
pygame.quit()

这个程序使用了Pygame库，可以在命令行中使用 `pip install pygame` 进行安装。运行程序后，使用键盘上下左右键来控制蛇的移动方向，尽可能地吃到食物，当蛇碰到墙壁或者自己的身体时游戏结束。