Use iControl API to query for node list for IP verification and hostname resolve.

Also, you are going to need to specify each partition and get the list for it seperately. Management.Folder.get_list will give you all of the partitions(or just create a static list in python with their names), and System.Session.set_active_folder to change the folder you are in.

I'd also recommend bigsuds over pycontrol. If I have time later I will see if I can put together a sample script.