[Python-Dev] Compact ordered dict is not ordered for split table. (was: PEP XXX: Compact ordered dict

[INADA Naoki]

I'm sorry, but I hadn't realized which compact ordered dict is
not ordered for split table.

For example:
>>> class A:
...   ...
...
>>> a = A()
>>> b = A()
>>> a.a = 1
>>> a.b = 2
>>> b.b = 3
>>> b.a = 4
>>> a.__dict__.items()
dict_items([('a', 1), ('b', 2)])
>>> b.__dict__.items()
dict_items([('a', 4), ('b', 3)])


This doesn't affects to **kwargs and class namespace.

But if we change the language spec to dict preserves insertion order,
this should be addressed.


On Tue, Jun 21, 2016 at 2:02 PM, INADA Naoki <songofacandy at gmail.com> wrote:
> On Tue, Jun 21, 2016 at 12:17 PM, Oleg Broytman <phd at phdru.name> wrote:
>> Hi!
>>
>> On Tue, Jun 21, 2016 at 11:14:39AM +0900, INADA Naoki <songofacandy at gmail.com> wrote:
>>> Here is my draft, but I haven't
>>> posted it yet since
>>> my English is much worse than C.
>>> https://www.dropbox.com/s/s85n9b2309k03cq/pep-compact-dict.txt?dl=0
>>
>>    It's good enough for a start (if a PEP is needed at all). If you push
>> it to Github I'm sure they will come with pull requests.
>>
>> Oleg.
>
> Thank you for reading my draft.
>
>> (if a PEP is needed at all)
>
> I don't think so. My PEP is not for changing Python Language,
> just describe implementation detail.
>
> Python 3.5 has new OrderedDict implemented in C without PEP.
> My patch is relatively small than it.  And the idea has been well known.
>
> --
> INADA Naoki  <songofacandy at gmail.com>



-- 
INADA Naoki  <songofacandy at gmail.com>