auto save

snake.py

@@ -3,7 +3,7 @@ from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
 pygame.init()
-background = pygame.image.load('bg.png')
+
 # 创建一个窗口
 screen = pygame.display.set_mode((660,480))
 
@@ -12,4 +12,4 @@ while True:
         print(event)
         if event.type == locals.QUIT:
             exit()
-    screen.blit(background,(0,0))
\ No newline at end of file
+            backgrou
\ No newline at end of file