code: def load(obj, env=None, silent=True, key=None, filename=None):
      
      if ConfigObj is None:  # pragma: no cover
          BaseLoader.warn_not_installed(obj, "ini")
          return
  
      loader = BaseLoader(
          obj=obj,
          env=env,
          identifier="ini",
          extensions=INI_EXTENSIONS,
          file_reader=lambda fileobj: ConfigObj(fileobj).dict(),
          string_reader=lambda strobj: ConfigObj(strobj.split("\n")).dict(),
      )
      loader.load(filename=filename, key=key, silent=silent)
docs: Reads and loads in to "obj" a single key or all keys from source file.
  
      :param obj: the settings instance
      :param env: settings current env default='development'
      :param silent: if errors should raise
      :param key: if defined load a single key, else load all in env
      :param filename: Optional custom filename to load
      :return: None