auto save

snake.py

 import pygame
-from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
 # 创建一个窗口
-screen=pygame.display.set_mode((640,480))
-
-background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')
-food = pygame.image.load('food.png')
-body = pygame.image.load('body.png')
-
+screen=pygame.dispaly.set_mode((660,480))
 while True:
-    for event in pygame.event.get():
-        if event.type== locals.QUIT:
-            exit() 
-
-
-
-
-pygame.display.update()   
\ No newline at end of file
+    for event 
+