code: def test_raise_on_invalid_argument_type(imagenet):
      with pytest.raises(TypeError) as error:
          _ = imagenet[1]
  
      assert "Target class needs to be a string" in str(error.value)
  
file_path: flashtorch/tests/test_imagenet.py
imports: import pytest
  from collections.abc import Iterable
  from flashtorch.utils import ImageNetIndex
label_desc: Use image node_id 13 for calling a global function with example usage: test_raise_on_invalid_argument_type(imagenet) without return types