[Python-Dev] Proposal: defaultdict

[Guido van Rossum]

On 2/17/06, Adam Olsen <rhamph at gmail.com> wrote:
> It's also makes it harder to read code.  You may expect d[key] to
> raise an exception, but it won't because of a single line up several
> pages (or in another file entierly!)

Such are the joys of writing polymorphic code. I don't really see how
you can avoid this kind of confusion -- I could have given you some
other mapping object that does weird stuff.

--
--Guido van Rossum (home page: http://www.python.org/~guido/)