Only the following can be done with pvpython. Notably the position is not controllable. It would be nice to have so feel free to open an issue on our gitlab : https://gitlab.kitware.com/paraview/paraview/issues
r=GetActiveView()
r.OrientationAxesVisibility
r.OrientationAxesInteractivity
r.OrientationAxesLabelColor
r.OrientationAxesOutlineColor
Another solution would be to hide the orientation axes and add a 3D positionable “Axes” source.