code: def test_download_format(lang):
      parser = prepare_wikipedia.get_parser()
      with tempfile.TemporaryDirectory() as root:
          download_args = parser.parse_args(
              [
                  "--mode",
                  "download+format",
                  "--lang",
                  lang,
                  "--date",
                  "latest",
                  "-o",
                  root,
              ]
          )
          prepare_wikipedia.main(download_args)
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_download_format(lang) without return types