Hah, funny, I wrote something like this many years ago, not as complete as this, inspired by argparse.Namespace.

But I concluded that it was a terrible idea. :-D

First, what happens if your dictionary key has a . in it?!

Worse, what happens when you pass one of these funky dictionaries to someone who is expecting a plain dict?

Also, it's very confusing to have ['A', 'B'] in d to be true when there is no element ['A', 'B'] in the dict.

This library gives you few new features, and a lot of potential traps, in order to save typing a few quotes.

I clapped a bunch, though: it was a fun article anyway. :-D