synset.relations fails with a KeyError

[dchaplinsky]

Hi! I'm trying to collect a dataset of relations between words in the engilsh WordNet.

However when I run the following code

synset = wn.synset("omw-en31-00128106-n")
synset.relations()
``

it fails with the following traceback:

KeyError Traceback (most recent call last)
Cell In [18], line 1
----> 1 synset.relations()

File ~/Projects/wikidrill/venv/lib/python3.9/site-packages/wn/_core.py:662, in Synset.relations(self, *args)
641 """Return a mapping of relation names to lists of synsets.
642
643 One or more relation names may be given as positional
(...)
659
660 """
661 d: Dict[str, List['Synset']] = {}
--> 662 for relname, ss in self._get_relations(args):
663 if relname in d:
664 d[relname].append(ss)

File ~/Projects/wikidrill/venv/lib/python3.9/site-packages/wn/_core.py:713, in Synset._get_relations(self, args)
711 rel_type, ili = rel_row[0], rel_row[4]
712 if ili is not None:
--> 713 relations[rel_type].add(ili)
715 # map back to target lexicons
716 seen = {ss._id for _, ss in targets}

KeyError: 'hypernym'

Same applies to the example from the docstring of relations methods

[goodmami]

Thanks, I've reproduced the bug locally and I should I have a fix ready.

[goodmami]

@dchaplinsky a fix has been released in version 0.9.3. Please let me know if you still see the issue.

[dchaplinsky]

Great, thanks for the fix. Could I humble recommend using defaultdict(set)?