[qbproger]

What do you suggest instead that's in Python?

Also, what markup to you prefer?

[vaneck]

I'm not the original poster, but MoinMoin is widely considered mature and featureful. I'm guessing they had a good reason not to use it; it may be worth asking them.

[benatkin]

MediaWiki has been extended a whole lot for dynamic content in Wikipedia. That might be one reason for the author choosing it. There has been work outside Wikipedia in making content features more powerful, with Semantic Mediawiki and DBpedia.

[leecGoimik7]

reStructeredText has been adopted by Python community as a de-facto standard for writing docs, it's simple, clean and extensible.