class_docstr: Test class for running examples.
docstr: Clean up after tests, remove all directories we created.
docstr_tok: ["Clean","up","after","tests",",","remove","all","directories","we","created","."]
code: def tearDownClass(cls):
      """Clean up after tests, remove all directories we created."""
      for dir_path in [
          _new_iris_dir,
          _new_california_dir,
          _new_titanic_dir,
      ]:
          rmtree(dir_path)
  
file_path: skll/tests/test_examples.py
imports: import json
  import subprocess
  import unittest
  from os import environ
  from pathlib import Path
  from shutil import copyfile, copytree, rmtree
  from skll.experiments import run_configuration
  from skll.utils.testing import examples_dir, other_dir
label_desc: Use image node_id 2 for calling the TestExamples obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types