547         class MyException(Exception):  class
550         e = MyException().with_traceback(tb)
551         self.assertIsInstance(e, MyException)
588         class MyException(OSError):  class
591         e = MyException()
659         class MyException(Exception):  class
668             raise MyException(obj)
675         except MyException as e:
687         except MyException:
746         except MyException:
752             except MyException:
907         class MyException(Exception):  class
915                 raise MyException(obj)
916             except MyException:
1175         class MyException(Exception, metaclass=Meta):  class
1181             except MyException as e: