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-rw-r--r--prolog/common.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/prolog/common.py b/prolog/common.py
index 02c74d0..41377bb 100644
--- a/prolog/common.py
+++ b/prolog/common.py
@@ -10,7 +10,7 @@ hint_type = {
'syntax_error': Hint('syntax_error'),
}
-def hint(program):
+def hint(program, solved_problems):
# Check program for syntax errors.
engine_id, output = prolog.engine.create(code=program)
if engine_id is not None: