auto save

snake.py

 import pygame
 from pygame import locals
-# 初始化pygame，为使用pygame做准备
 pygame.init()
 background=pygame.image.load('bg.png')
 food=pygame.image.load('apple.png')
 body=pygame.image.load('body.png')
-left=pygame.image.load('left.png')
-
-# 创建一个窗口
+head=pygame.image.load('left.png')
 screen = pygame.display.set_mode((660,480))
 while True:
     for event in pygame.event.get():
         if event.type==locals.QUIT:
             exit()    
-    
     screen.blit(background,(0,0))
     screen.blit(food,(0,120))
     screen.blit(body,(120,120))
@@ -22,8 +18,5 @@ while True:
     screen.blit(body,(180,120))
     screen.blit(body,(180,150))
     screen.blit(body,(180,180))
-    
-    
     screen.blit(left,(60,120))
-
     pygame.display.update()