Python IDE autocompletion for upcoming VTK 9.1

My python version is 3.6 on Ubuntu.

Load errors are as follows:

Traceback (most recent call last):
File “TestExtractPoints.py”, line 2, in
import vtk
File “/home/will/Develop/Bisect/release/lib/python3.6/site-packages/vtk.py”, line 31, in
all_m = importlib.import_module(‘vtkmodules.all’)
File “/usr/local/lib/python3.6/importlib/init.py”, line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File “/home/will/Develop/Bisect/release/lib/python3.6/site-packages/vtkmodules/all.py”, line 7, in
from .vtkCommonCore import *
ImportError: /home/will/Develop/Bisect/release/lib/python3.6/site-packages/vtkmodules/vtkCommonCore.cpython-36m-x86_64-linux-gnu.so: undefined symbol: PyExc_IndexError