docs: def _read_dataframes_100k(path):
      """ reads in the movielens 100k dataset"""
      import pandas
  
      ratings = pandas.read_table(os.path.join(path, "u.data"),
                                  names=['userId', 'movieId', 'rating', 'timestamp'])
  
      movies = pandas.read_csv(os.path.join(path, "u.item"),
                               names=['movieId', 'title'],
                               usecols=[0, 1],
                               delimiter='|',
                               encoding='ISO-8859-1')
  
      return ratings, movies