# Difficulty Accessing the vtkOCCTReader through the python modules

**URL:** https://discourse.vtk.org/t/difficulty-accessing-the-vtkocctreader-through-the-python-modules/12588
**Category:** Support
**Tags:** python
**Created:** [October 31, 2023, 5:43pm UTC](https://discourse.vtk.org/t/difficulty-accessing-the-vtkocctreader-through-the-python-modules/12588 "2023-10-31T17:43:47Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![couragious](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/c/9e8a1a/32.png) [@couragious](https://discourse.vtk.org/u/couragious)
#### Post date: [October 31, 2023, 5:43pm UTC](https://discourse.vtk.org/t/difficulty-accessing-the-vtkocctreader-through-the-python-modules/12588/1 "2023-10-31T17:43:47Z")

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I’m working with VTK in a python environment and am running into issues accessing the OCCTReader through the python module. I’ve attempted looking in both the 9.2.6, and 9.3.0rc1 versions accessible through pypi.

Is there something special that I need to do to access that particular reader? The other readers I’ve needed/tried have all worked without an issue.

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### Author: ![ben.boeckel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [November 1, 2023, 5:23pm UTC](https://discourse.vtk.org/t/difficulty-accessing-the-vtkocctreader-through-the-python-modules/12588/2 "2023-11-01T17:23:20Z")

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The wheels uploaded to PyPI do not have any external dependencies enabled (beyond those allowed by `auditwheel` and friends). The `vtkOCCTReader` needs an OpenCascade build, so it is not available in the wheels. You can build your own wheels by building VTK with the relevant module(s) enabled to get access to them.