[Python-Dev] Add a "transformdict" to collections

[Eric V. Smith]

On 09/10/2013 11:54 AM, Janzert wrote:
> On 9/10/2013 10:54 AM, Antoine Pitrou wrote:
>> (also, I would intuitively expect the latest key to be held, not the
>> first one, since that's what happens for values.)
>>
>> Regards
>>
>> Antoine.
>>
> 
> I intuitively expected, and I think most often would want, the first key
> to be held. The reason being that I would except most often the initial
> insertion to be the canonical form.

My stock ticker example (but from a real problem I had a few days ago)
would want to have this example: I want the first key, because I'm
pre-seeding the dict with a variety of keys that are of the canonical form.

> Whichever way is adopted, I think even if you say it's implementation
> specific, people will end up relying on it in their code.

Agreed.

Eric.