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-rw-r--r--prolog/problems/family_relations/sister_2/common.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/prolog/problems/family_relations/sister_2/common.py b/prolog/problems/family_relations/sister_2/common.py
index 9be9e6d..96ff47d 100644
--- a/prolog/problems/family_relations/sister_2/common.py
+++ b/prolog/problems/family_relations/sister_2/common.py
@@ -17,7 +17,7 @@ sister(X, Y) :-
import prolog.engine
import server.problems
-def test(program):
+def test(session, program):
# Test queries and expected answers (values of X).
queries = [
('sister(melanie, X)', set(['andrew'])),
@@ -46,7 +46,7 @@ def test(program):
return n_correct, len(queries)
-def hint(program):
+def hint(session, program):
if '\=' not in program and '\==' not in program:
return [{'id': 'x_y_must_be_different'}]
return None