https://www.zhihu.com/question/24590883

https://www.zhihu.com/question/20501628

http://blog.csdn.net/qiqll/article/details/39339319

http://blog.csdn.net/xiao_qiang_/article/details/3006801

http://itchat.readthedocs.io/zh/latest/

python 标准库