Good example of wxPython app

[Bill Baxter]

Hello folks,
I'm looking for a good example of a document-centric wxPython app that
does things the "right way".  By that I mean good MVC separation, good
command handling architecture, good support for undo-redo.

I'm just looking for something that I can learn from.  Actually
doesn't even really need to be done with wxPython, but would be best
if so.  Actually the ultimate best would be some sort of app skeleton
that I can build on that embodies "best practices", but I'm not
holding my breath for that one.

Thanks,
--bb