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((660,480))
-background=pygame.image.load('bg.png')
-right=pygame.image.load('right.png')
-food=pygame.image.load('apple.png')
-body=pygame.image.load('body.png')
+screen=pygame.display.set_mode((660,720))
 while True:
-    for event in pygame.event.get():
-        if event.type==locals.QUIT:
-            exit()
-    background.
\ No newline at end of file
+    for event in display.
\ No newline at end of file