# Modifying python vtkHyperStreamline

**URL:** https://discourse.vtk.org/t/modifying-python-vtkhyperstreamline/3028
**Category:** Support
**Tags:** proposal
**Created:** [April 12, 2020, 3:36am UTC](https://discourse.vtk.org/t/modifying-python-vtkhyperstreamline/3028 "2020-04-12T03:36:47Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![JDJD](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/j/bc8723/32.png) [@JDJD](https://discourse.vtk.org/u/JDJD)
#### Post date: [April 12, 2020, 3:36am UTC](https://discourse.vtk.org/t/modifying-python-vtkhyperstreamline/3028/1 "2020-04-12T03:36:47Z")

</div>

Greetings,

I have a modification of [vtkHyperStreamline.cxx](https://github.com/Kitware/VTK/blob/master/Filters/General/vtkHyperStreamline.cxx) and I’d like to port the modified vtkHyperStreamline to Python.

1. I was unable to find any corresponding Python source code for vtkHyperStreamline on Github. Do I have to implement the entire filter including modifications made using [vtkPythonAlgorithm](https://blog.kitware.com/vtkpythonalgorithm-is-great/)?

2. I’m stumped at how I should even approach this. Like, take the imports for example, where do I find equivalent Python classes?

3. Are there any examples of porting a modified filter to Python?

Thanks for the help. Much appreciated!  
Stay safe!