When have you seen this pattern shown in a Python beginners tutorial? ... or anywhere? I have never seen this pattern before and for that reason it is interesting.
Why would it show in beginner tutorials?
It's just not pythonic.
> There should be one-- and preferably only one --obvious way to do it.
Not to mention that the object['field'] syntax is rather annoying.
There's really nothing new or interesting about it. Except maybe for beginners. Which is fine. Nothing wrong with being a beginner. It's just not what I expect to see on the frontpage of HackerNews.
That's almost like someone saying: look wow, 2+2 and 2*2 and 2^2 all return the same result! Sure, amusing when you realize it for the first time, but hardly interesting for anyone but a first grader.