[vtk-developers] Speeding up `import vtk`

[Jean-Christophe Fillion-Robin]

Hi Utkarsh,

I would prefer to have a more generic way of configuring the import
behavior.

The idea would be to have two top-level packages:  vtk and vtkConfig

To skip  loading of all module, you would do:

-------------------
import vtkConfig
vtkConfig.VTK_MODULE_IMPORT = vtkConfig.EXPLICIT   #  Default would be
vtkConfig.ALL.  Later we could also have vtkConfig.LAZY

import vtk
-------------------

This would allow to keep things coherent for our user. Naming the package
"vtkmodules" seem unconventional.

It would also have the advantage of support addition of new option.

For example:

vtkConfig.RENDERING_METHOD = vtkConfig.OFFSCREEN  #  or vtkConfig.MESA,
....

Jc


On Tue, Dec 12, 2017 at 4:55 PM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> On Tue, Dec 12, 2017 at 3:18 PM, Ben Boeckel <ben.boeckel at kitware.com>
> wrote:
> > On Tue, Dec 12, 2017 at 15:06:15 -0500, Prabhu Ramachandran wrote:
> >> Would `vtkm` be a shorter name rather than `vtkmodules`?
> >
> > `vtkm` is a different project already (though I don't know of its status
> > with Python wrapping outside of the VTK filters which use it).
>
> Yea, alas `vtkm` won't be a good option.
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