fix

tests/kernel/puzzles/test_mcq.py

@@ -38,8 +38,8 @@ class TestMCQPuzzle(unittest.TestCase):
         self.assertEqual(len(puzzle.jammer), 4)
         self.assertEqual(set(puzzle.jammer), {"   "})  # 三个空格？实际上循环填充空格
 
-    @patch('random.sample')
-    @patch('random.shuffle')
+    @patch("random.sample")
+    @patch("random.shuffle")
     def test_refresh(self, mock_shuffle, mock_sample):
         """测试 refresh 方法生成题目"""
         mapping = {"q1": "a1", "q2": "a2", "q3": "a3"}
@@ -51,7 +51,7 @@ class TestMCQPuzzle(unittest.TestCase):
             ["j1", "j2", "j3"],  # 为每个问题选择干扰项（实际调用两次）
         ]
         puzzle.refresh()
-        
+
         # 检查 wording 是列表
         self.assertIsInstance(puzzle.wording, list)
         self.assertEqual(len(puzzle.wording), 2)
@@ -110,7 +110,7 @@ class TestMCQPuzzle(unittest.TestCase):
         puzzle.answer = ["选择题 - 尚未刷新谜题"]
         self.assertIn("选择题 - 尚未刷新谜题", str(puzzle))
         self.assertIn("正确答案", str(puzzle))
-        
+
         puzzle.wording = ["Q1", "Q2"]
         puzzle.answer = ["A1", "A2"]
         str_repr = str(puzzle)
@@ -118,5 +118,5 @@ class TestMCQPuzzle(unittest.TestCase):
         self.assertIn("A1, A2", str_repr)
 
 
-if __name__ == '__main__':
-    unittest.main()
+if __name__ == "__main__":
+    unittest.main()