diff options
Diffstat (limited to 'prolog/problems/family_relations/sister_2/common.py')
| -rw-r--r-- | prolog/problems/family_relations/sister_2/common.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/prolog/problems/family_relations/sister_2/common.py b/prolog/problems/family_relations/sister_2/common.py index 6c48b00..b2bf954 100644 --- a/prolog/problems/family_relations/sister_2/common.py +++ b/prolog/problems/family_relations/sister_2/common.py @@ -153,4 +153,4 @@ def hint(program, solved_problems): if engine_id: prolog.engine.destroy(engine_id) - return None + return [] |