External vtk 9.0 class with python wrapping (vtkWrapHierarchy)

I think this is what you are requesting: RFC: Toward supporting distribution of VTK based modules on PyPI

For now, all you need to do is “heart” the topic to show your support and wait a couple of weeks (maybe a few months) until it is completed. There are already preliminary wrapping scripts in vtkAddon, but the final version might be a standalone repository.