The project is managed using Git on the Wikimedia repositories. You can view the code over Diffusion, patch review is done with Gerrit, the Pywikibot page is here. The project is mirrored on GitHub, look here for an overview. On GitHub you can still clone Pywikibot using Subversion and do some more stuff. You can still find the Subversion stuff under Special:Code/pywikipedia.
Bugs should be reported on Phabricator. Core bugs can be found in here and compat bugs are here. To get information about new bugs subscribe to the bugs mailing list. Formerly bugs were tracked using Bugzilla and before that Sourceforge was used.
This moderate-traffic mailing list (averaging a handful of emails per week) is for human discussion on all Pywikibot topics, including support, follow-ups to announcements, follow-ups to Git commits, and developer discussions.
This low-traffic mailing list (at most one email per month) was for important announcements, for example breaking changes. This list is not officially marked as inactive, but it is not used. Archives
This high-traffic, read-only mailing list received an automated email after each pywikipedia SVN commit. Closed after the migration to git. Archives
If you prefer using a chat, you can join the Freenode.IRC channel on
Pywikibot is translated using translatewiki.net. Translate it, Tutorial about how to add scripts to Translatewiki and Progress information.