Создание узла в графе?

Пытаюсь создать узел через python, что я делаю не так:

In [1]: import redis
   ...: from redisgraph import Node, Edge, Graph

In [2]: r = redis.Redis(host='localhost', port=6379)

In [3]: g = Graph('graph', 'r')

In [4]: test3 = Node(label='test3', properties = { 'abc' : 9, 'age': 33})

In [5]: g.add_node(test3)

In [6]: g.commit()
 ---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-6-b6b3d9b0a206> in <module>()
----> 1 g.commit()

/usr/local/lib/python2.7/dist-packages/redisgraph/client.pyc in    commit(self)
    134             query = query[:-1]
    135 
--> 136         return self.query(query)
    137 
    138     def flush(self):

/usr/local/lib/python2.7/dist-packages/redisgraph/client.pyc in  query(self, q)
    153         statistics = None
    154         result_set = None
--> 155         response =   self.redis_con.execute_command("GRAPH.QUERY", self.name, q)
    156 
    157         result_set = response[0]

AttributeError: 'str' object has no attribute 'execute_command'

Нашел ошибку:

g = Graph('graph', 'r')

должно быть :

g = Graph('graph', r)