code: def _get_raw_movielens_data():
      
  
      path = _get_movielens_path()
  
      if not os.path.isfile(path):
          _download_movielens(path)
  
      with zipfile.ZipFile(path) as datafile:
          return (datafile.read('ml-100k/ua.base').decode().split('\n'),
                  datafile.read('ml-100k/ua.test').decode().split('\n'))
docs: Return the raw lines of the train and test files.