def register(self, detector):
        if self._known_types not in detector.info_type:
            self[detector.info_type] = [detector]
            self._known_types.insert(detector.order, detector.info_type)
        else:
            self[detector.info_type].append(detector)
dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/contrib/user_agent_parser.py/DetectorsHub.register/swapped operands of `not in`