code: def _pytypes_excepthook(exctype, value, tb):
      An excepthook suitable for use as sys.excepthook, that strips away
      the part of the traceback belonging to pytypes' internals.
      Can be switched on and off via pytypes.clean_traceback
      or pytypes.set_clean_traceback.
      The latter automatically installs this hook in sys.excepthook.
      """
      if pytypes.clean_traceback and issubclass(exctype, TypeError):
          traceback.print_exception(exctype, value, tb, _calc_traceback_limit(tb))
      else:
          if _sys_excepthook is None:
              sys.__excepthook__(exctype, value, tb)
          else:
              _sys_excepthook(exctype, value, tb)
docs: An excepthook suitable for use as sys.excepthook, that strips away
      the part of the traceback belonging to pytypes' internals.
      Can be switched on and off via pytypes.clean_traceback
      or pytypes.set_clean_traceback.
      The latter automatically installs this hook in sys.excepthook.