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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 _periodic_task_int(self):
 """Internal periodic discovery task routine to check TLV attributes. This routine retrieves the LLDP TLC's on all its configured interfaces. If the retrieved TLC is different than the stored TLV, it invokes the callback. """

        for intf in self.intf_list:
            attr_obj = self.get_attr_obj(intf)
            status = attr_obj.get_lldp_status()
            if not status:
                ret = self.pub_lldp.enable_lldp(intf)
                attr_obj.update_lldp_status(ret)
                continue
            bond_intf_change = self._check_bond_interface_change(
                attr_obj.get_phy_interface(), attr_obj)
            tlv_data = self.pub_lldp.get_lldp_tlv(intf)
            # This should take care of storing the information of interest
            if self.cmp_store_tlv_params(intf, tlv_data) or (
                attr_obj.get_db_retry_status() or bond_intf_change or (
                    attr_obj.get_topo_disc_send_cnt() > (
                    constants.TOPO_DISC_SEND_THRESHOLD))):
                # Passing the interface attribute object to CB
                ret = self.cb(intf, attr_obj)
                status = not ret
                attr_obj.store_db_retry_status(status)
                attr_obj.reset_topo_disc_send_cnt()
            else:
                attr_obj.incr_topo_disc_send_cnt()