save project

snake.py

 import pygame
 # 初始化pygame，为使用pygame做准备
+from pygame import locals
 pygame.init()
 # 创建一个窗口
 screen=pygame.display.set_mode((660,480))
 while True:
     for a in pygame.event.get():
+        print(a)
         if a.type==locals.QUIT:
             exit()
+    screen.blit(background,(0,0))
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