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((600,480))
+while True:
+    for event in pygame.event.get():
+        if event.type==locals.QUIT:
+            exit()