auto save

snake.py

@@ -2,11 +2,15 @@ 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')
 # 创建一个窗口
 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(right , (290,120))
+    # screen.blit(food , (360,300))
+    pygame.display.update()
     
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