auto save

snake.py

@@ -28,8 +28,8 @@ while True:
     # 将贪吃蛇的身体画上去
     screen.blit(body, (210, 120))
     for i in range(len(wz) - 1):
+    screen.blit(body, wz[i])
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面
-    pygame.display.update()
-    SZ.tick(3)
\ No newline at end of file
+    pygame.display.update()
\ No newline at end of file