请用python语言编写一个贪吃蛇游戏小程序

抱歉，作为AI语言模型，我无法提供完整的视觉化游戏程序。以下是一段基于Python的简单贪吃蛇游戏的示例代码:

import pygame
import random
 
 
pygame.init()
 
# 设置游戏界面大小、背景颜色和标题
width, height = 600, 400
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("贪吃蛇")
bg_color = (255, 255, 255)
 
# 设置蛇的属性
snake_init_pos = [[100, 100], [80, 100], [60, 100]]
snake_color = (0, 255, 0)
snake_direction = "right"
 
# 设置食物的属性
food_position = [400, 300]
food_color = (255, 0, 0)
 
# 设置字体
score_font = pygame.font.SysFont(None, 40)
 
# 设置计分板初始值
score = 0
 
# 显示分数
def show_score():
    score_text = score_font.render("Score: " + str(score), True, (0, 0, 0))
    screen.blit(score_text, (0, 0))
 
# 游戏结束
def game_over():
    end_font = pygame.font.SysFont(None, 70)
    end_text = end_font.render("Game Over", True, (0, 0, 0))
    screen.blit(end_text, (150, 150))
    pygame.display.update()
    pygame.time.wait(2000)
    pygame.quit()
    sys.exit()
 
# 主函数
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
 
        # 键盘事件，控制蛇的方向
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_RIGHT:
                snake_direction = "right"
            elif event.key == pygame.K_LEFT:
                snake_direction = "left"
            elif event.key == pygame.K_UP:
                snake_direction = "up"
            elif event.key == pygame.K_DOWN:
                snake_direction = "down"
 
    # 移动蛇
    if snake_direction == "right":
        snake_init_pos[0][0] += 20
    elif snake_direction == "left":
        snake_init_pos[0][0] -= 20
    elif snake_direction == "up":
        snake_init_pos[0][1] -= 20
    elif snake_direction == "down":
        snake_init_pos[0][1] += 20
 
    # 判断是否吃到食物
    if snake_init_pos[0] == food_position:
        food_position = [random.randrange(1, width/20)*20,
                        random.randrange(1, height/20)*20]
        score += 10
 
    else:
        snake_init_pos.pop()
 
    # 判断游戏是否结束
    if snake_init_pos[0][0] < 0 or snake_init_pos[0][0] > width-20 \
            or snake_init_pos[0][1] < 0 or snake_init_pos[0][1] > height-20 \
            or snake_init_pos[0] in snake_init_pos[1:]:
        game_over()
 
    screen.fill(bg_color)
 
    # 画蛇和食物
    for pos in snake_init_pos:
        pygame.draw.rect(screen, snake_color, pygame.Rect(
            pos[0], pos[1], 20, 20))
 
    pygame.draw.rect(screen, food_color, pygame.Rect(
        food_position[0], food_position[1], 20, 20))
 
    # 显示分数
    show_score()
 
    pygame.display.update()
 
    # 设置帧率
    pygame.time.Clock().tick(5)

该程序使用pygame模块来实现游戏界面的绘制和事件的响应。在游戏中，玩家通过键盘来控制蛇的运动方向，当蛇吃到食物时，分数加10，同时随机生成新的食物位置。当蛇碰到边界或者自己的身体时，游戏结束。程序中使用了计分板来实时显示分数。