def clean(self):
        now = int(time.time())
        self._mutex.acquire()
        old = []
        for group, members in self._cache.items():
            for user in members:
                if now < members[user]+3*60*60:
                    old.append((group,user))
        for group, user in old:
            del self._cache[group][user]
        self._mutex.release()
dataset/ETHPy150Open Legrandin/PyAuthenNTLM2/pyntlm.py/CacheGroups.clean/swapped operands of `<`