It's a MongoDB ORM for Python.

$ pip install mongoengine

To start using MongoEngine we will import like this:

import mongoengine

To connect a DB we will use the connect function, its first argument is the DB:

connect('project1')
connect('project1', host='192.168.1.35', port=12345)
connect('project1', username='webapp', password='pwd123')
connect('project1', host='mongodb://localhost/database_name')