code: def tearDownClass(cls):
      try:
          os.rmdir(temp_dir)
      except:
          print("Unable to remove temp dir")
  
imports: from __future__ import print_function
  from __future__ import division
  import unittest
  from numpy.testing import assert_array_equal
  from numpy.testing import assert_equal
  from numpy.testing import assert_raises
  from numpy.testing import assert_warns
  import os
  import glob
  import numpy
  from scipy.sparse import csr_matrix
  from scipy.sparse import csc_matrix
  from scipy.sparse import coo_matrix
  from sklearn.model_selection import cross_val_predict
  from sklearn.model_selection import cross_val_score
  from sklearn.model_selection import KFold
  from sklearn.datasets import load_boston
  from sklearn.metrics import mean_absolute_error
  from sklearn.metrics import make_scorer
  from sklearn.linear_model import LinearRegression
  from sklearn.linear_model import Ridge
  from vecstack import stacking
  from vecstack.core import model_action
label_desc: Use image node_id 2 for calling the TestFuncRegression obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types