Python 云NDB中基于密钥的查询

我猜这很简单，但我很难把它做好。我成功地创建了该类型的多个实体

class Word(ndb.Model):
    name = ndb.StringProperty(required=True)
    definition = ndb.StringProperty(required=True)

现在我想以最有效的方式查询特定的实体。所以我在做什么

with client.context():
  ans = Word.query(ndb.Key(“Word”,”love”)).get()

但我犯了个错误

File "/layers/google.python.pip/pip/lib/python3.7/site-packages/google/cloud/ndb/query.py", line 1531, in filter
    "Cannot filter a non-Node argument; received %r" % filter
TypeError: Cannot filter a non-Node argument; received Key(‘Word’, ‘love’)” 

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我查看我的数据存储，发现单词就在那里。我怎样才能成功地做到这一点呢？

事实证明，我所要做的就是

with client.context():
  ans = ndb.Key(“Word”,”love”).get()