def teardown_test_class(cls):
     instrumentation._reinstall_default_lookups()
 def teardown_class(cls):
     clear_mappers()
     instrumentation._reinstall_default_lookups()
 def teardown_class(cls):
     instrumentation._reinstall_default_lookups()
 def teardown_class(cls):
     clear_mappers()
     instrumentation._reinstall_default_lookups()