code: def _read_dataframes_20M(path):
      """reads in the movielens 20M"""
      import pandas
  
      ratings = pandas.read_csv(os.path.join(path, "ratings.csv"))
      movies = pandas.read_csv(os.path.join(path, "movies.csv"))
  
      return ratings, movies
  
file_path: implicit/implicit/datasets/movielens.py
imports: import logging
  import os
  import h5py
  import numpy
  from scipy.sparse import coo_matrix, csr_matrix
  from implicit.datasets import _download
label_desc: Use image node_id 3 for calling a global function with example usage: _read_dataframes_20M(path) and returns: ratings,  movies