I really like this approach. Plus, it's easy to parse, particularly if you use class name capitalization for the named tuple (like you did). I've seen this do

I really like this approach. Plus, it's easy to parse, particularly if you use class name capitalization for the named tuple (like you did). I've seen this done before, but after your reminder, I resolve to start using named tuples where before I sometimes gratuitously used classes. They probably perform much better than classes, too (although I'll probably benchmark just to be sure).