def reset_times(self, obj):
        obj.ndb.last_season = None
        obj.ndb.last_timeslot = None
Opt(re) is an RE which matches either |re| or the empty string.
dataset/ETHPy150Open evennia/evennia/evennia/contrib/extended_room.py/CmdExtendedDesc.reset_times--crossover with--dataset/ETHPy150Open probcomp/bayeslite/external/plex/dist/Plex/Regexps.py/Opt