code: def test_reweighing_intersection(new_adult):
      """Test that the new Reweighing runs with >2 protected groups."""
      X, y, _ = new_adult
      rew = Reweighing()
      rew.fit_transform(X, y)
      assert rew.reweigh_factors_.shape == (4, 2)
  
file_path: AIF360/tests/sklearn/test_reweighing.py
imports: import numpy
  from sklearn.linear_model import LogisticRegression
  from sklearn.model_selection import GridSearchCV
  from sklearn.metrics import accuracy_score, make_scorer
  from aif360.algorithms.preprocessing import Reweighing
  from aif360.sklearn.preprocessing import Reweighing, ReweighingMeta
label_desc: Use image node_id 2 for calling a global function with example usage: test_reweighing_intersection(new_adult) without return types