def connect(self): 
        try:
            self.connection = pymongo.Connection(self.host, self.port)
            self.db = self.connection[self.name]
        except AutoReconnect:
            raise DatabaseException("It's not possible connect to the database")
def test_can_encode_relationship_with_properties(self):
        a = Node("Person", name="Alice")
        b = Node("Person", name="Bob")
        ab = KNOWS(a, b, since=1999)
        encoded = cypher_repr(ab, related_node_template="{property.name}")
        self.assertEqual("(Alice)-[:KNOWS {since: 1999}]->(Bob)", encoded)