[TINKERPOP-2057] TypeError when grouping by multiple attributes

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 3.3.3
• Component/s: python
• Assignee: Unassigned
• Reporter: Pierce Freeman
• Created: 03/Oct/18 18:29
• Updated: 22/Oct/18 21:49
• Resolved: 22/Oct/18 21:49

Description

The python serialization engine fails when trying to group a path by two intermediate variables:

 

graph = Graph()

g = graph.traversal().withRemote(DriverRemoteConnection('ws://localhost:8182/gremlin','g'))

g.V().as_("a").out().out().as_("b").path().group().by(__.select("a", "b")).unfold().toList()

~/tinkerpop/gremlin-python/src/main/jython/gremlin_python/structure/io/graphsonV3d0.py in objectify(cls, l, reader)
456 while x < len(l):
457 new_dict[reader.toObject(l[x])] = reader.toObject(l[x + 1])
--> 458 x = x + 2
459 return new_dict
460 

TypeError: unhashable type: 'dict'