使用python的初级数据结构 参考： https://www.bilibili.com/video/BV1Hd4y1B7Mg?p=21 https://www.bilibili.com/video/BV1G4411h7BA/?p=14&spm_id_from=pageDriver&vd_source=e1de9f6d02128b9c85f5fdd03c7e72fc https://www.bilibili.com/video/BV1G4411h7BA/?p=13&vd_source=e1de9f6d02128b9c85f5fdd03c7e72fc