python - neo4jrestclient 索引结果返回 Iterable 而不是 node/url？

Question

我正在尝试遵循文档 http://readthedocs.org/docs/neo4j-rest-client/en/latest/indices.html

我希望索引查询返回一个节点，但它返回的是“Iterable: Node”:

db = GraphDatabase("http://localhost:7474/db/data")
playerIndex = db.nodes.indexes.get("index1")
playerNode = db.nodes.create(player_id = "Homer")
playerIndex.add("player_id", "Homer", playerNode)
print playerIndex["player_id"]["Homer"], "\n", playerNode

打印:

<Neo4j Iterable: Node>
<Neo4j Node: http://localhost:7474/db/data/node/157>

如何获取 neo4jrestclient 索引查询结果以返回像第 2 行这样的节点？

Answer 1

索引查找可以返回多个节点，因此在这种情况下，它返回一个迭代器。要获取迭代器中的下一项，请执行 .next():

print playerIndex["player_id"]["Homer"].next(), "\n", playerNode

参见:https://github.com/versae/neo4j-rest-client/blob/master/neo4jrestclient/iterable.py