http://www.runoob.com/python3/python3-class.html
https://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000
以上两个选一个就好
视频教程：https://search.bilibili.com/all?keyword=python&from_source=banner_search
pycham安装：https://www.cnblogs.com/beginner-boy/p/7785041.html
