auto save

snake.py

 import pygame
-from pygame in locals
+from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
 pygame.init()
@@ -7,5 +7,6 @@ pygame.init()
 # 创建一个窗口
 s=pygame.display.set_mode((660,450))
 while True:
-    for event in pygame.event.get()
-    if 
+    for event in pygame.event.get():
+        if event.tipe==locals.QUIT:
+            exit()