case insensitive dictionary

[vbgunz]

John Henry wrote:
> I believe the standard dictionary should be amened to allow the use of
> case insensitive keys - as an option.  I found some work done by others
> to do that at:
>
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/283455
>
> but the problem with that approach is that they lowercase the keys
> immediately when you create the dictionary and so the true identity of
> the key is lost.
>
> Of course, I can subclass it and save a copy of the "real" key but
> that's kind of messcy.
>
> In other words:
>
> If I have:
>
>     pets=caselessDict()
>
>     pets["Cat"] = 3
>     pets["Dog"] = 2
>
> I would like to see:
>
>    pets["cat"]  prints 3
>    pets["DOG"] prints 2
>
> but
>
>    print pets.keys()
>
> should print:
>
> "Cat", "Dog"
>
> not:
>
> "cat", "dog"

You can try to title-case the list returned with keys() like so:
print [x.title() for x in pets.keys()]

Not a perfect solution but you get what you want... just an idea :)