code: def test_mask_attribute_error_in_cls_arg(self):
      class B:
          pass
  
      class C(object):
          def getbases(self):
              raise AttributeError
  
          __bases__ = property(getbases)
  
      self.assertRaises(TypeError, issubclass, B, C())
  
imports: import unittest
  import typing
  from test import support
label_desc: Use image node_id 4 for calling the TestIsSubclassExceptions obj's underlying member method code with example usage: obj.test_mask_attribute_error_in_cls_arg() without return types