I couldn't find any examples using the Visualization Toolkit, VTK, with wxPython, so I'm offering the Python source to a small project. It shows a simple conceptual illustration in a wxPython Frame with menus that change the VTK pipeline. I use this set of classes to deliver VTK illustrations to researchers in a way that they can still tweak colors, positioning of the objects, and save images.
Below are the files themselves for browsing.