class_docstr: Test the transform function (validate and dispatch).
docstr: Test that an expand transform must be a callable otherwise it is not valid.
code: def test_expand_transform_not_callable(self):
      """Test that an expand transform must be a callable otherwise it is not valid."""
  
      with pytest.raises(
          TransformError,
          match="The expand function must be a valid Python function.",
      ):
          transform(
              first_valid_transform, expand_transform=non_callable
          )
  
imports: from typing import Sequence, Callable
  from functools import partial
  import pytest
  import pennylane
  from pennylane.transforms.core import transform, TransformError, TransformContainer
label_desc: Use image node_id 10 for calling the TestTransformDispatcher obj's underlying member method code with example usage: obj.test_expand_transform_not_callable() without return types