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Posted to dev@tinkerpop.apache.org by "Stephen Mallette (Jira)" <ji...@apache.org> on 2021/02/08 17:20:01 UTC
[jira] [Closed] (TINKERPOP-2395) Gremlin Python doesn't support
list as keys in groupCount
[ https://issues.apache.org/jira/browse/TINKERPOP-2395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephen Mallette closed TINKERPOP-2395.
---------------------------------------
Resolution: Fixed
> Gremlin Python doesn't support list as keys in groupCount
> ---------------------------------------------------------
>
> Key: TINKERPOP-2395
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2395
> Project: TinkerPop
> Issue Type: Improvement
> Components: python
> Affects Versions: 3.4.7
> Reporter: Connor Skennerton
> Assignee: Stephen Mallette
> Priority: Major
> Fix For: 3.5.0
>
>
> The following works fine in the console but fails when converted to python using gremlin-server 3.4.7.
> {code:java}
> graph = TinkerGraph.open()
> g = graph.traversal()
> g.addV('test').property(set, 'name', 'name1').property(set, 'name', 'name2')
> g.addV('test').property(set, 'name', 'name1').property(set, 'name', 'name2')
> g.addV('source').property(set, 'name', 'source')
> g.V(0L).as('0').V(3L).as('3').V(6L).as('6').addE('root').from('6').to('0').addE('root').from('6').to('3')
> g.V().has('name', 'source').out('root').groupCount().by(values('name').fold())
> ==>[[name1,name2]:2]
> {code}
> The stack trace from python is as follows
> {code:java}
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/driver/connection.py", line 83, in _receive
> status_code = self._protocol.data_received(data, self._results)
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/driver/protocol.py", line 83, in data_received
> message = self._message_serializer.deserialize_message(message)
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/driver/serializer.py", line 163, in deserialize_message
> return self._graphson_reader.toObject(msg)
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 129, in toObject
> return dict((self.toObject(k), self.toObject(v)) for k, v in obj.items())
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 129, in <genexpr>
> return dict((self.toObject(k), self.toObject(v)) for k, v in obj.items())
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 129, in toObject
> return dict((self.toObject(k), self.toObject(v)) for k, v in obj.items())
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 129, in <genexpr>
> return dict((self.toObject(k), self.toObject(v)) for k, v in obj.items())
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 126, in toObject
> return self.deserializers[obj[GraphSONUtil.TYPE_KEY]].objectify(obj[GraphSONUtil.VALUE_KEY], self)
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 432, in objectify
> new_list.append(reader.toObject(obj))
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 126, in toObject
> return self.deserializers[obj[GraphSONUtil.TYPE_KEY]].objectify(obj[GraphSONUtil.VALUE_KEY], self)
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 269, in objectify
> return Traverser(reader.toObject(d["value"]),
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 126, in toObject
> return self.deserializers[obj[GraphSONUtil.TYPE_KEY]].objectify(obj[GraphSONUtil.VALUE_KEY], self)
> File "/Users/connor.skennerton/.pyenv/versions/dogma/lib/python3.6/site-packages/gremlin_python/structure/io/graphsonV3d0.py", line 484, in objectify
> new_dict[reader.toObject(l[x])] = reader.toObject(l[x + 1])
> TypeError: unhashable type: 'list'
> {code}
> Converting the list to a tuple would allow python to use these values as dictionary keys
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