def update_one(self, query, doc):
        """
        Updates one element of the collection

        :param query: dictionary representing the mongo query
        :param doc: dictionary representing the item to be updated
        :return: UpdateResult
        """
        if self.table is None:
            self.build_table()

        if u"$set" in doc:
            doc = doc[u"$set"]

        allcond = self.parse_query(query)

        try:
            result = self.table.update(doc, allcond)
        except:
            # TODO: check table.update result
            # check what pymongo does in that case
            result = None

        return UpdateResult(raw_result=result)
def update_one ( self , query , doc ) : if self . table is None : self . build_table ( ) if u"$set" in doc : doc = doc [ u"$set" ] allcond = self . parse_query ( query ) try : result = self . table . update ( doc , allcond ) except : result = None return UpdateResult ( raw_result = result )
Updates one element of the collection

        :param query: dictionary representing the mongo query
        :param doc: dictionary representing the item to be updated
        :return: UpdateResult