old_contents: from chainercv.utils.iterator.apply_prediction_to_iterator import apply_prediction_to_iterator  # NOQA
  from chainercv.utils.iterator.ProgressHook import ProgressHook  # NOQA
  from chainercv.utils.iterator.unzip import unzip  # NOQA
  
new_contents: from chainercv.utils.iterator.apply_prediction_to_iterator import apply_prediction_to_iterator  # NOQA
  from chainercv.utils.iterator.progress_hook import ProgressHook  # NOQA
  from chainercv.utils.iterator.unzip import unzip  # NOQA
  
subject: fix import