Notice: Need Python 3.5+ Using asyncio(async/await) in python3.5+ to replace callback method for sake of asynchronous style. For instance, the return_future decorator from tornado(v5.1 below) has been revised and adapted to tornado(v6.0+).
motorengine is a port of the incredible mongoengine mapper, using Motor for asynchronous access to mongo.
Find out more by reading motorengine documentation.