http://www.cnblogs.com/fightformylife/p/4134986.html
http://cn.python-requests.org/zh_CN/latest/
http://cn.python-requests.org/zh_CN/latest/user/quickstart.html
http://www.cnblogs.com/fightformylife/p/4134986.html
http://cn.python-requests.org/zh_CN/latest/
http://cn.python-requests.org/zh_CN/latest/user/quickstart.html
class MetaCls(type): def __new__(cls, *args, **kwargs): print("in MetaCls") # return super(Meta