用PYTHON写一个贪吃蛇的游戏

很抱歉，作为AI语言模型，我无法提供编程文件，但我可以为您提供一个基本的贪吃蛇游戏框架源代码，供您参考和学习：

import pygame
import random

WIDTH = 800  # 窗口宽度
HEIGHT = 600  # 窗口高度
GRID_SIZE = 20  # 格子大小（即蛇头和蛇身的大小）
BG_COLOR = (169, 169, 169)  # 背景颜色
SNAKE_COLOR = (0, 128, 0)  # 蛇的颜色
FOOD_COLOR = (255, 0, 0)  # 食物的颜色

class Snake:
    def __init__(self):
        self.body = [(3 * GRID_SIZE, 3 * GRID_SIZE), (2 * GRID_SIZE, 3 * GRID_SIZE), (GRID_SIZE, 3 * GRID_SIZE)]  # 蛇身的坐标列表
        self.direction = "right"  # 蛇的方向

    def move(self):
        if self.direction == "up":
            new_head = (self.body[0][0], self.body[0][1] - GRID_SIZE)
        elif self.direction == "down":
            new_head = (self.body[0][0], self.body[0][1] + GRID_SIZE)
        elif self.direction == "left":
            new_head = (self.body[0][0] - GRID_SIZE, self.body[0][1])
        elif self.direction == "right":
            new_head = (self.body[0][0] + GRID_SIZE, self.body[0][1])

        self.body.insert(0, new_head)
        self.body.pop()

    def eat(self):
        self.body.append(self.body[-1])

    def draw(self, surface):
        for i, segment in enumerate(self.body):
            if i == 0:
                segment_color = SNAKE_COLOR
            else:
                segment_color = (0, 255 - i * 20, 0)
            pygame.draw.rect(surface, segment_color, pygame.Rect(segment[0], segment[1], GRID_SIZE, GRID_SIZE))

class Food:
    def __init__(self):
        self.position = (random.randint(0, WIDTH // GRID_SIZE - 1) * GRID_SIZE, random.randint(0, HEIGHT // GRID_SIZE - 1) * GRID_SIZE)  # 食物的坐标

    def reset_position(self):
        self.position = (random.randint(0, WIDTH // GRID_SIZE - 1) * GRID_SIZE, random.randint(0, HEIGHT // GRID_SIZE - 1) * GRID_SIZE)

    def draw(self, surface):
        pygame.draw.rect(surface, FOOD_COLOR, pygame.Rect(self.position[0], self.position[1], GRID_SIZE, GRID_SIZE))

def main():
    pygame.init()
    screen = pygame.display.set_mode((WIDTH, HEIGHT))
    clock = pygame.time.Clock()
    font = pygame.font.SysFont("arial", 24)

    snake = Snake()
    food = Food()

    score = 0

    running = True
    while running:
        clock.tick(10)

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False
            if 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"

        if snake.body[0][0] < 0 or snake.body[0][0] > WIDTH - GRID_SIZE or snake.body[0][1] < 0 or snake.body[0][1] > HEIGHT - GRID_SIZE:
            running = False

        for segment in snake.body[1:]:
            if snake.body[0] == segment:
                running = False

        if snake.body[0] == food.position:
            snake.eat()
            food.reset_position()
            score += 10

        screen.fill(BG_COLOR)
        snake.move()
        snake.draw(screen)
        food.draw(screen)
        score_text = font.render("Score: " + str(score), True, (0, 0, 0))
        screen.blit(score_text, (10, 10))
        pygame.display.update()

    pygame.quit()

if __name__ == "__main__":
    main()

这只是一个基本的贪吃蛇游戏框架，您可以根据这个基础代码进行修改和完善，实现更多的游戏功能和特效。