Today I working well with python 3.5.1.
Most of my source code was wrote with python 2.7 and the next step was to using pip3.5 to update and upgrade some python modules.
I try to install PyQt4 with pip3.5 - not working.
So I used the old way: whl file from here.
That was good, most of the scripts was running.
The main problem was OpenGL and that will make errors when you try to use QtOpenGL.
The result of this seam to me the python 3.5.1 it's now without OpenGL features.