auto save

snake.py

 import pygame
-
+from pygame.locals import *
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
 # 创建一个窗口
-??
\ No newline at end of file
+screen=pygame.display.set_mode((660,480))
+bg=pygame.image.load("bg.png")
+while True:
+    screen.blit(bg,(0,0))
+    for event in pygame.event.get():
+        #print(event)
+        if event.type==QUIT:
+            pygame.QUIT
+            exit()
+    pygame.display.update()
\ No newline at end of file