code: def test_is_notebook():
      assert (
          np_utils.to_np_shape(()) == ()
      )  # pylint: disable=g-explicit-bool-comparison
      assert np_utils.to_np_shape((1, 2, 3)) == (1, 2, 3)
      assert np_utils.to_np_shape((None, 2, 3)) == (-1, 2, 3)
      assert np_utils.to_np_shape((None, None, None)) == (-1, -1, -1)
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_is_notebook() without return types