[Python-ideas] Dict with inverse form

[Chris Barker]

On Fri, Feb 12, 2016 at 3:02 PM, Nikolaus Rath <Nikolaus at rath.org> wrote:

>
> Are there use cases where the set of keys and the set of values is
> overlapping?
>
> In most cases you can probably get away by not offering an "inverse"
> object at all, just let regular lookup fall back on value lookup.
>

hmm, interesting. my use case at hand is mapping color name strings to RGB
values -- it should be a one to one relationship, and I need to look for
either one.

But you are quite right, they would never overlap, unless someone decided a
nice name for a color would be "(125, 15, 235)" -- even then they wouldn't
because the RGB value sare a tuple, not a string.

So that may be the way to get the easiest interface.

-Thanks,
  - Chris







>
> Best,
> -Nikolaus
>
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