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
 SB=pygame.display.set_mode((660,480))
-
+while True:
+    for event in pygame.event.get():
+        if event.type==locals.QUIT:
+            exit()