python-blueprints is out with its documentation. Printemps and its documented client too, but not in the form I was expecting. I forgot about the fact that os.fork was doing a copy of the objects instead of sharing the object, given the GIL, I think Printemps doesn't make much sens.
Still python-blueprints is working well with both Neo4j and OrientDB so if you need to do graph database stuff in Python I recommend it. Getting another database working with python-blueprints is easy, fill an issue if you have troubles.