A pointless command that demonstrates how to use a notifier without arguments

notifier.py

#!/usr/bin/env python

import lx
import lxu.command
import modo

class Command (lxu.command.BasicCommand):

    def __init__ (self):
        lxu.command.BasicCommand.__init__ (self)
        
        self.not_svc = lx.service.NotifySys ()
        self.notifier = lx.object.Notifier ()
	
    def basic_Enable (self, msg):
        selected = modo.current ().selectedByType (lx.symbol.sITYPE_MESH)   
        return len (selected) > 0
        
    def cmd_Flags (self):
        return 0

    def basic_Execute (self, msg, flags):
        selected = modo.current ().selectedByType (lx.symbol.sITYPE_MESH)
        
        for item in selected:
            lx.out (item.name)
                
    def cmd_NotifyAddClient (self, argument, object):
        self.notifier = self.not_svc.Spawn ("select.event", "item +d")
        self.notifier.AddClient (object)
        
    def cmd_NotifyRemoveClient (self, object):
        self.notifier.RemoveClient (object)
        
lx.bless (Command, "mesh.printName")

On a different note: there is a shortcut for common item types, so
selected = modo.current ().selectedByType (lx.symbol.sITYPE_MESH)

can be substituted with
selected = modo.Scene().meshes