code: def test_is_not_directory():
      # Arrange
      text = "abc"
  
      # Act
      it_is_not = _util.is_directory(text)
  
      # Assert
      assert not it_is_not
  
file_path: pillow/Tests/test_util.py
imports: from __future__ import annotations
  import pytest
  from PIL import _util
label_desc: Use image node_id 5 for calling a global function with example usage: test_is_not_directory() without return types