save project

snake.py

@@ -5,10 +5,11 @@ from pygame import locals
 pygame.init()
 
 # 创建一个窗口
+background = pygame.image.load('bg.png')
+
 screen=pygame.display.set_mode((660,480))
 while True:
     for event in pygame.event.get():
         if event.type== locals.QUIT:
-            exit()  
-
+            exit()