code: def test_pyt(self):
      pytest.importorskip("torch")
      backend = "PYT"
      exp = self._get_exp(backend, method="gradient")
      assert issubclass(
          type(exp),
          dice_ml.explainer_interfaces.explainer_base.ExplainerBase,
      )
      assert isinstance(
          exp, dice_ml.explainer_interfaces.dice_pytorch.DicePyTorch
      )
  
file_path: DiCE/tests/test_dice.py
imports: import pytest
  from raiutils.exceptions import UserConfigValidationException
  import dice_ml
  from dice_ml.utils import helpers
label_desc: Use image node_id 3 for calling the TestBaseExplainerLoader obj's underlying member method code with example usage: obj.test_pyt() without return types