[Python-Dev] Proposal: add odict to collections

[Anthon van der Neut]

Sorry to pipe in so late, but this is actually the default behaviour of
my C implementation (which I call KIO (Key Insertion Order), there is an
option to change this to KVIO (Key (or) Value Insertion Order), which
moves the pair to the end.

Anthon

Armin Ronacher wrote:
> Steven D'Aprano <steve <at> pearwood.info> writes:
> 
>> Conceptually, I would expect the following behaviour:
>>
>>>>> od = odict()
>>>>> od[1] = 'spam'  # insert a new key
>>>>> od[2] = 'parrot'  # insert a new key
>>>>> od[1] = 'ham'  # modify existing key
>>>>> od.items()
>> [(1, 'ham'), (2, 'parrot')]
> That behavior is different to any ordered-dict implementation
> out there ;-)
> 
> Regards,
> Armin
> 
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