code: def _incomplete_files(filenames):
    
    tmp_files = [get_incomplete_path(f) for f in filenames]
    try:
      yield tmp_files
      for tmp, output in zip(tmp_files, filenames):
        tf.io.gfile.rename(tmp, output)
    finally:
      for tmp in tmp_files:
        if tf.io.gfile.exists(tmp):
          tf.io.gfile.remove(tmp)
docs: Create temporary files for filenames and rename on exit.