Minor Description
This issue was originally brought up on Gremlin Users:
https://groups.google.com/g/gremlin-users/c/GRbsqJ-2t_E/m/IaWCOdGyCAAJ
but in summary there is an issue with GraphTraversal._getattr which provides sugar for values(key). It works fine except that PyCharm debugger introspects by way of len which then calls values("len_") and alters the traversal. It is fixed with something like:
def __getattr__(self, key):
if key == '__len__':
raise AttributeError("nope")
return self.values(key)
but I'm not sure if that's the best fix for this issue.