生成器,迭代器 https:// www.cnblogs.com/alex3714/articles/5765046.html 类的高级用法

生成器,迭代器 https://www.cnblogs.com/alex3714/articles/5765046.html
类的高级用法 https://www.cnblogs.com/alex3714/articles/5213184.html
类的高级用法 https://www.cnblogs.com/linhaifeng/articles/6204014.html
python面向对象进阶 https://www.cnblogs.com/wupeiqi/p/4766801.html
python面向对象 https://www.cnblogs.com/wupeiqi/articles/5433893.html