使用python生成一个贪吃蛇游戏

好的，下面是一个简单的 Python 贪吃蛇游戏的代码示例：

import pygame, sys
import random

pygame.init()

# 定义窗口大小和格子大小
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600
CELL_SIZE = 20

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

# 设置窗口大小
WINDOW_SIZE = (WINDOW_WIDTH, WINDOW_HEIGHT)
screen = pygame.display.set_mode(WINDOW_SIZE)
pygame.display.set_caption('Snake Game')

# 定义字体
font = pygame.font.Font(None, 36)

# 定义贪吃蛇的初始位置和大小
snake = [(100, 100), (80, 100), (60, 100)]
snake_direction = 'right'

# 定义食物的初始位置
food = (random.randint(0, (WINDOW_WIDTH - CELL_SIZE) // CELL_SIZE) * CELL_SIZE,
        random.randint(0, (WINDOW_HEIGHT - CELL_SIZE) // CELL_SIZE) * CELL_SIZE)

# 定义游戏循环
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            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
    if snake_direction == 'up':
        new_head = (snake[0][0], snake[0][1] - CELL_SIZE)
    elif snake_direction == 'down':
        new_head = (snake[0][0], snake[0][1] + CELL_SIZE)
    elif snake_direction == 'left':
        new_head = (snake[0][0] - CELL_SIZE, snake[0][1])
    elif snake_direction == 'right':
        new_head = (snake[0][0] + CELL_SIZE, snake[0][1])

    snake.insert(0, new_head)

    # 判断是否吃到食物
    if snake[0] == food:
        food = (random.randint(0, (WINDOW_WIDTH - CELL_SIZE) // CELL_SIZE) * CELL_SIZE,
                random.randint(0, (WINDOW_HEIGHT - CELL_SIZE) // CELL_SIZE) * CELL_SIZE)
    else:
        snake.pop()

    # 判断是否撞到墙或自己的身体
    if snake[0][0] < 0 or snake[0][0] >= WINDOW_WIDTH or snake[0][1] < 0 or snake[0][1] >= WINDOW_HEIGHT:
        pygame.quit()
        sys.exit()
    for i in range(1, len(snake)):
        if snake[0] == snake[i]:
            pygame.quit()
            sys.exit()

    # 绘制界面
    screen.fill(WHITE)
    pygame.draw.rect(screen, GREEN, (food[0], food[1], CELL_SIZE, CELL_SIZE))

    for x, y in snake:
        pygame.draw.rect(screen, BLUE, (x, y, CELL_SIZE, CELL_SIZE))

    # 显示得分
    score = len(snake) - 3
    score_text = font.render('Score: %d' % score, True, BLACK)
    screen.blit(score_text, (10, 10))

    pygame.display.update()
    pygame.time.delay(100)

运行上面的代码，即可开始游戏。玩家可以使用方向键控制贪吃蛇的移动方向，吃到食物后贪吃蛇会变长，如果撞到墙或者自己的身体，游戏结束。