Locking doesn't work as expected, Exception handling too about dnfdaemon HOT 5 CLOSED

        logger.debug('Checking for updates')
        try:
            if self.backend.Lock():
                pkgs = self.backend.GetPackages('updates')
                rc = len(pkgs)
                logger.debug('# of updates : %d' % rc)
                self.backend.Unlock()
            else:
                logger.debug('Error getting the dnfdaemon lock')
                rc = -1
        except:  # catch backend exception
            logger.debug('Error in getting updates')
            rc = -1