Here is a list of known Python-based WikiEngines
CyberPublishing -- a wiki-based web publishing framework written in Python; GPL
Hatta -- a Wiki which runs out of a Mercurial repository whose pages are just the files in that repository
Luminotes -- a WYSIWYG personal wiki notebook for organizing your notes and ideas. Not currently developed.
Markdoc -- a lightweight Markdown-based Wiki system
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 (including this web site), GPL.
PikiPiki -- Python-based, will run completely standalone
PyleWiki -- Python-based, optional CVS backend, Unix-like rwxrwxrwx permissions on pages
PyWiki -- Python-based, uses RCS, GPL license (development stalled)
Sphene Community Tools -- Django based wiki and forum applications.
Trac -- an enhanced wiki and issue tracking system for software development projects. Supports MoinMoin-style, ReStructuredText, html, and textile as markup formats. Runs as cgi, FastCGI, ModPython, or with standalone server. Pluggable architecture with focus on simplicity.
WikiNehesa -- Many features, including images, headerbars, TEXT centering, image inventory/previewer, image uploader. Modular. $FREE$. GNU GPL.
zim-wiki at http://www.zim-wiki.org -- WYSIWIG personal/desktop wiki with index, links, image inclusion, checkboxes and bulleted lists, equations, graphviz; calendar, ToDo; prints to clean html. Customizable, all-python over gtk2, inbuilt-server, uses filesystem as db; debian packaged. Documentation. Actively developed 2012.