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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def persisted(cls, seconds=0, minutes=0, hours=0, days=0, weeks=0):
 """ Cache the return of the function for given time. Default to 1 day. :param weeks: as name :param seconds: as name :param minutes: as name :param hours: as name :param days: as name :return: return of the function decorated """

        days += weeks * 7
        hours += days * 24
        minutes += hours * 60
        seconds += minutes * 60

        if seconds == 0:
            # default to 1 day
            seconds = 24 * 60 * 60

        def get_persisted_file(hash_number):
            folder = cls.get_persist_folder()
            if not os.path.exists(folder):
                os.makedirs(folder)
            return os.path.join(folder, '{}.pickle'.format(hash_number))

        def is_expired(filename):
            if os.path.exists(filename):
                file_age = cls.get_file_age(filename)
                if file_age > seconds:
                    log.debug('persisted cache expired: {}'.format(filename))
                    ret = True
                else:
                    ret = False
            else:
                ret = True
            return ret

        def decorator(func):

            def func_wrapper(*args, **kwargs):
                def _key_gen():
                    string = '{}-{}-{}-{}'.format(
                        func.__module__,
                        func.__name__,
                        args,
                        kwargs.items()
                    )
                    return hashlib.sha256(string.encode('utf-8')).hexdigest()

                key = _key_gen()
                persisted_file = get_persisted_file(key)
                if is_expired(persisted_file):
                    ret = func(*args, **kwargs)
                    with open(persisted_file, 'wb') as f:
                        pickle.dump(ret, f)
                else:
                    with open(persisted_file, 'rb') as f:
                        ret = pickle.load(f)
                return ret

            return func_wrapper

        return decorator