code: def test_ensure_value_to_cell(self):
      value_to_test = "test_value"
  
      def dummy_fn():
          value_to_test
  
      cell_value = dummy_fn.__closure__[0].cell_contents
      self.assertEqual(value_to_test, cell_value)
  
file_path: keras/keras/utils/python_utils_test.py
imports: import base64
  import marshal
  from keras import testing
  from keras.utils import python_utils
label_desc: Use image node_id 8 for calling the PythonUtilsTest obj's underlying member method code with example usage: obj.test_ensure_value_to_cell() without return types