Hi, I am developing my own WikiEngine in the PythonLanguage, based on PikiPiki but with quite a few enhancements. Development started in December 2000, and I am hard at work adding features already available in the more mature WikiEngine's.
It's called PikiePikie. You can find the current status at http://pikie.dyndns.org/cgi/pikie.py and the latest version is available for download from http://pikie.dyndns.org/cgi/pikie.py?DownloadPage
I can be e-mailed at mailto:steve.pike@webbing.nl