save project

snake.py

@@ -27,7 +27,7 @@ while True:
     screen.blit(body, (180, 90))
     # 将果实画上去
     screen.blit(food, (360, 300))
-    x+=30
     # 刷新画面
+    x=x+30
     pygame.display.update()
     FPSCLOCK.tick(3)