code: def upsert(self, _id, dct, attribute="_id"):
          
  
          mongo_response = yield self.update(_id, dct, upsert=True, attribute=attribute)
  
          raise Return(mongo_response)
docs: Update or Insert a new document
  
          :param str _id: The document id
          :param dict dct: The dictionary to set on the document
          :param str attribute: The attribute to query for to find the object to set this data on
          :returns: JSON Mongo client response including the "n" key to show number of objects effected