save project

snake.py

@@ -2,7 +2,7 @@ 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:
@@ -10,5 +10,5 @@ while True:
         print(event)
         if event.type ==locals.QUIT:
             exit()
-
+    screen.blit(background,(0,0))