Here is a list of known Python-based WikiEngines
MoinMoin -- A PythonLanguage SourceForge project, based on PikiPiki - runs as cgi, FastCgi, ModPython, Twisted or with standalone server, extensible design - everything is a plugin, lots of plugins and large community of users, GPL.
PikiePikie -- Python-based, lets you put a WebLog on any page (based on PikiPiki)
[http://mdev.sourceforge.net/jesse/sliki/ Sliki] - runs with ModPython
[http://frotz.net/sakana/space/mojibake mojibake] - based on [http://frotz.net/sakana/space/home Sakana], runs with ModPython
CMFWiki -- a ZwiKi variant; old but compatible with Zope's CMF (Content Management Framework).
CyberPublishing -- a wiki-based web publishing framework written in Python; GPL
PyWiki -- Python-based, uses RCS, GPL license
PikiPiki -- Python-based, will run completely standalone
PyleWiki -- Python-based, optional CVS backend, Unix-like rwxrwxrwx permissions on pages
WikiForNow -- a ZwiKi variant; used at zope.org
WikiNehesa -- Many features, including images, headerbars, TEXT centering, image inventory/previewer, image uploader. Modular. $FREE$. GNU GPL.
WyPy -- a ShortestWikiContest contender, 23 lines
[http://wiki.webwareforpython.org/thiswiki Not-Yet-Named Wiki] - runs on Webware. Supports static publishing, WYSIWYG editing, ReStructuredText. Still in rapid initial development phase (as of Apr 2004).
MonkeyWiki -- Simple install/use, single file, very flexible templating, rewrite-friendly (based on PikiPiki)