save project

snake.py

 import pygame
-
+from pygame import locals
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
 # 创建一个窗口
 screen=pygame.display.set_mode((660,480))
 while True:
-    
\ No newline at end of file
+    for event in pygame.event.get():
+        print(event)
+        if event.type==locals.QUIT:
+        #接收到退出事件后退出程序
+            exit()
+            
+    pygame.display.update()
\ No newline at end of file