Python/VTK import style

Support
1

I may be answering my own question to some extent, but I’m used to importing VTK functionality into Python as:

import vtk

however I see a lot of examples and test code using import lines like this:

from vtkmodules.vtkCommonCore import vtkPoints

I do see this page indicating that it is experimental API, but this page looks like I should start migrating my code to use it … will import vtk be deprecated any time soon?

2

Unlikely; it is far too wide-spread to start kicking out warnings at this point. The main benefit is that vtkmodules imports way faster because you import only what is needed.

3

To future readers, if you are trying to migrate to the from vtkmodules style, you can figure out what module a vtk object is in using Python’s online help:

>>> help(vtk.vtkCellArray)

Help on class vtkCellArray in module vtkmodules.vtkCommonDataModel:
# ... etc. ...