Use MongoEngine and PyMongo together
Author of MongoEngine here - MongoEngine is built upon pymongo so of course you can drop into pymongo - or use raw pymongo in your code!
There are some document helpers that allow you to access raw pymongo methods in MongoEngine eg:
class Person(Document): name = StringField()# Access the pymongo collection for the Person documentcollection = Person._get_collection()collection.find_one() # Use raw pymongo to query data