docs: def find_pyd_file():
      """
      Return path to .pyd after successful build command.
      :return: Path to .pyd file or None.
      """
  
      if not os.path.isdir("./build"):
          raise NotADirectoryError
  
      for path, dirs, files in os.walk("./build"):
          for file_name in files:
              file_name_parts = os.path.splitext(file_name)
              if file_name_parts[1] == ".pyd":
                  return path
      return None