code: def test_movielens_privacy():
      """Check that there are no privacy concerns. In Movielens, we check that all the
      userID are numbers.
      """
      df = movielens.load_pandas_df(size="100k")
      users = df["userID"].values.tolist()
      assert all(isinstance(x, int) for x in users)
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_movielens_privacy() without return types