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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 register_a_problem(self, prob, hosts, services, timeperiods, bi_modulations):
 # pylint: disable=too-many-locals """Call recursively by potentials impacts so they update their source_problems list. But do not go below if the problem is not a real one for me like If I've got multiple parents for examples :param prob: problem to register :type prob: alignak.objects.schedulingitem.SchedulingItem :param hosts: hosts objects, used to get object in act_depend_of_me :type hosts: alignak.objects.host.Hosts :param services: services objects, used to get object in act_depend_of_me :type services: alignak.objects.service.Services :param timeperiods: Timeperiods objects, used for all kind of timeperiod (notif, check) :type timeperiods: alignak.objects.timeperiod.Timeperiods :param bi_modulations: business impact modulation are used when setting myself as problem :type bi_modulations: alignak.object.businessimpactmodulation.Businessimpactmodulations :return: list of host/service that are impacts :rtype: list[alignak.objects.schedulingitem.SchedulingItem] TODO: SchedulingItem object should not handle other schedulingitem obj. We should call obj.register* on both obj. This is 'Java' style """

        # Maybe we already have this problem? If so, bailout too
        if prob.uuid in self.source_problems:
            return []

        now = time.time()
        was_an_impact = self.is_impact
        # Our father already look if he impacts us. So if we are here,
        # it's that we really are impacted
        self.is_impact = True

        impacts = []
        # Ok, if we are impacted, we can add it in our
        # problem list
        # TODO: remove this unused check
        if self.is_impact:
            logger.debug("I am impacted: %s", self)
            # Maybe I was a problem myself, now I can say: not my fault!
            if self.is_problem:
                self.no_more_a_problem(hosts, services, timeperiods, bi_modulations)

            # Ok, we are now impacted, we should take the good state
            # but only when we just go to the impacted state
            if not was_an_impact:
                self.set_impact_state()

            # Ok now we can be a simple impact
            impacts.append(self.uuid)
            if prob.uuid not in self.source_problems:
                self.source_problems.append(prob.uuid)
            # we should send this problem to all potential impacted that
            # depend on us
            for (impacted_item_id, status, timeperiod_id, _) in self.act_depend_of_me:
                # Check if the status is ok for impact
                if impacted_item_id in hosts:
                    impact = hosts[impacted_item_id]
                else:
                    impact = services[impacted_item_id]
                timeperiod = timeperiods[timeperiod_id]
                for stat in status:
                    if self.is_state(stat):
                        # now check if we should bailout because of a
                        # not good timeperiod for dep
                        if timeperiod is None or timeperiod.is_time_valid(now):
                            new_impacts = impact.register_a_problem(prob, hosts,
                                                                    services, timeperiods,
                                                                    bi_modulations)
                            impacts.extend(new_impacts)

            # And we register a new broks for update status
            self.broks.append(self.get_update_status_brok())

        # now we return all impacts (can be void of course)
        return impacts