code: def setUpClass(cls):
      cls.movielens_100k = get_movielens_100k()
  
imports: from unittest import TestCase
  from tensorrec import TensorRec
  from test.datasets import get_movielens_100k
label_desc: Use image node_id 1 for calling the MovieLensTestCase obj's underlying member method code with example usage: obj.setUpClass(cls) without return types