frozendict

Steven D'Aprano steve+comp.lang.python at pearwood.info
Thu Feb 9 03:01:40 CET 2012


On Wed, 08 Feb 2012 19:23:19 -0600, Evan Driscoll wrote:

> Hi all,
> 
> I've been trying for a few days (only a little bit at a time) to come up
> with a way of implementing a frozendict that doesn't suck. I'm gradually
> converging to a solution, but I can't help but think that there's some
> subtlety that I'm probably missing which is why it's not already
> provided.
> 
> Does anyone know why Python doesn't already come with a frozendict, or
> why there seem to only be a couple attempts to write one?

Because there is no way to implement one that doesn't suck?

Because it's a solution in search of a problem?

<shrug>

Actually, that's unfair. A write-once dict would be awesome for providing 
read-only constants, if only there were some way to set a namespace to 
using non-builtin dicts.



-- 
Steven



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