hi,
$ python
>>> import PyQt5
>>> import qt
with no error
ii libvtk6.3 6.3.0+dfsg2-2+b6 armhf VTK libraries
ii libvtk6.3-qt 6.3.0+dfsg2-2+b6 armhf VTK libraries, Qt files
ii libvtk7.1 7.1.1+dfsg1-12+b2 armhf VTK libraries
ii python-vtk6 6.3.0+dfsg2-2+b6 armhf Python bindings for VTK
ii python3-vtk7 7.1.1+dfsg1-12+b2 armhf Python bindings for VTK
ii vtk 7.1.1-qt5py2-1 armhf vtk
but none of them are working I see the splash screen of LinuxCNC and then it simply doesn't start.