code: def tearDown(self):
      log.info = self.old_log
      super(DirUtilTestCase, self).tearDown()
  
imports: import unittest
  import os
  import stat
  import shutil
  import sys
  from distutils.dir_util import mkpath, remove_tree, create_tree, copy_tree, ensure_relative
  from distutils import log
  from distutils.tests import support
  from test.test_support import run_unittest
label_desc: Use image node_id 3 for calling the DirUtilTestCase obj's underlying member method code with example usage: obj.tearDown() without return types