code: def setUp(self):
      # clear _opener global variable
      self.addCleanup(urllib.request.urlcleanup)
  
imports: import errno
  import unittest
  from test import support
  from test.support import os_helper
  from test.support import socket_helper
  from test.support import ResourceDenied
  from test.test_urllib2 import sanepathname2url
  import os
  import socket
  import urllib.error
  import urllib.request
  import sys
label_desc: Use image node_id 1 for calling the TimeoutTest obj's underlying member method code with example usage: obj.setUp() without return types