code: def tearDown(self):
      sys.stdout = self.old_stdout
      self.cleanup_testfn()
      sys.argv = self.old_argv[0]
      sys.argv[:] = self.old_argv[1]
      super(CoreTestCase, self).tearDown()
  
imports: import StringIO
  import distutils.core
  import os
  import shutil
  import sys
  import test.test_support
  from test.test_support import captured_stdout, run_unittest
  import unittest
  from distutils.tests import support
  from distutils import log
label_desc: Use image node_id 2 for calling the CoreTestCase obj's underlying member method code with example usage: obj.tearDown() without return types