def _reserved_num_to_user(self, num, prefix):
        for k, v in self.ofproto.__dict__.items():
            if k not in self.deprecated_value and \
               k.startswith(prefix) and v == num:
                return k.replace(prefix, '')
        return num
dataset/ETHPy150Open osrg/ryu/ryu/lib/ofctl_utils.py/OFCtlUtil._reserved_num_to_user/original