On: Python's Tornado has swept me off my feet

[gxti]

txpostgres implements psycopg's async interface for Twisted, which uses a similar eventloop/callback model: http://git.wulczer.org/?p=txpostgres.git

Not that "unnecessarily complicated", but Twisted is a lot more mature with respect to coding patterns and has formalized callbacks into a Deferred object that makes it much easier to understand.