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Re: dict: retrieve the original key by key

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  Re: dict: retrieve the original key by key Chris Rebert <clp2@rebertia.com> - 2011-05-15 01:44 -0700

#5411 — Re: dict: retrieve the original key by key

On Sun, May 15, 2011 at 1:28 AM, Christoph Groth <cwg@falma.de> wrote:
> Dear python experts,
>
> I use a huge python dictionary where the values are lists of that
> dictionary's keys (yes, a graph).  Each key is thus referenced several
> times.
>
> As the keys are rather large objects, I would like to save memory by
> re-using key objects wherever possible, instead of having several equal
> objects in memory.
>
> There does not seem to be a way to retrieve the original key from a
> python dictionary.  Is there a technical reason for this?  (Other than
> that such functionality was not considered to be useful enough.)

Define "original key".

Cheers,
Chris

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