save project

snake.py

@@ -5,3 +5,12 @@ pygame.init()
 
 # 创建一个窗口
 screen=pygame.display.set_mode((800,600))
+while True:
+    for event in pygame.event.get()
+        if event.type == locals.QUIT:
+            #接收到退后事件后退出程序
+            exit()
+            #将背景图画上去
+    screen.blit(background,(0,0))
+            #刷新图画
+    pygame.display.update()
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