Using VMTK in Python

Community VMTK
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1

Hello,

I’m trying to use the functionality of VMTK in the python interpreter (Slicer stable 20210226, Linux. Slicer-VMTK extension installed from the extension manager). When trying to import vtkvmtk I ge the following error:

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/home/rafael/src/Slicer-stable/build/Slicer-build/NA-MIC/Extensions-29738/SlicerVMTK/lib/Slicer-4.11/qt-loadable-modules/vtkvmtk.py", line 9, in <module>
    from .vtkvmtkCommonPython import *
ImportError: attempted relative import with no known parent package

Is this expected? Is there any other way to make use of VMTK in the Slicer python interpreter?

Thanks in advance!

2

We import VMTK like this:

It could be nice to fix this and and also the error message at startup (Fail to instantiate module “vtkvmtk” error reported at startup · Issue #22 · vmtk/SlicerExtension-VMTK · GitHub) but we have been holding off changes until VTK9 update and VTK’s new remote module support is in place (see RFC: Toward supporting distribution of VTK based modules on PyPI - Support - VTK).

1 Like
3

Thank you @lassoan! That solved the problem.

4

@lassoan Is this a matter of where Slicer-VMTK installs the files, or is Slicer that needs to accommodate the plugin infrastructure?

5

It is just a matter of where Slicer-VMTK installs VMTK DLLs. For example, the DLLs could be in a subdirectory inside the scripted module folder and not directly in the module folder.