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-rw-r--r--prolog/problems/lists_advanced/shiftright_2/common.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/prolog/problems/lists_advanced/shiftright_2/common.py b/prolog/problems/lists_advanced/shiftright_2/common.py
index fbe1b1c..3bd03c1 100644
--- a/prolog/problems/lists_advanced/shiftright_2/common.py
+++ b/prolog/problems/lists_advanced/shiftright_2/common.py
@@ -57,7 +57,9 @@ def test(code, aux_code):
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
if n_correct == len(test_cases):
- hints += [{'id': 'final_hint'}]
+ tokens = prolog.util.tokenize(code)
+ if prolog.util.Token('NAME', 'shiftleft') not in tokens:
+ hints += [{'id': 'final_hint'}]
return n_correct, len(test_cases), hints