auto save

snake.py

@@ -31,6 +31,7 @@ while True:
     # 将果实画上去
     screen.blit(food, (360, 300))
     x+=30
+    
     F.tick(3)
     # 刷新画面
-    pygame.display.update()
\ No newline at end of file
+    pygame.display.update()