Just to make sure, do you have this IP access point?
http://www.homematic-ip.com/Downloads/homematic_ip/produkte/access_point_frontal.jpg
If so, then it won’t work. pyhomematic uses the XML-RPC API, which the CCU (the “old” HomeMatic hub) exposes. The new IP access point doesn’t have that, so there is no (compatible) way that allows access to the paired devices. Currently the only way to use IP devices is with a CCU. Sorry. 