code: def deletephysicalport(check_processor=_false_processor,
                         reorder_dict = default_iterate_dict):
      
      def walker(walk, write, timestamp, parameters_dict):
          for key, parameters in reorder_dict(parameters_dict):
              try:
                  value = walk(key)
              except KeyError:
                  pass
              else:
                  try:
                      phynet = walk(value.physicalnetwork.getkey())
                  except KeyError:
                      pass
                  else:
                      try:
                          phymap = walk(PhysicalNetworkMap._network.leftkey(phynet))
                      except KeyError:
                          pass
                      else:
                          check_processor(value, phynet, phymap, walk, write, parameters=parameters)
                          phymap.ports.dataset().discard(value.create_weakreference())
                          write(phymap.getkey(), phymap)
                  try:
                      physet = walk(PhysicalPortSet.default_key())
                  except KeyError:
                      pass
                  else:
                      physet.set.dataset().discard(value.create_weakreference())
                      write(physet.getkey(), physet)
                  write(key, None)
      return walker
docs: :param check_processor: check_processor(physicalport, physicalnetwork, physicalnetworkmap,
                              walk, write \*, parameters)