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Tue Apr 1 13:23:12 CEST 2014 · https://mail.python.org/pipermail/python-dev/2014-April/133742.html

Nick Coghlan wrote:
> On 1 Apr 2014 01:38, "Victor Stinner" <victor.stinner at gmail.com> wrote:
>> 2014-03-31 13:38 GMT+02:00 Andrey Ponomarenko <aponomarenko at rosalab.ru>:
>>> The public libpython API changes will be tracked here:
>>> http://upstream-tracker.org/versions/python_public_api.html
>>>
>>> For now I've excluded only symbols starting with an underscore. What
> other
>>> symbols should be excluded?
>> It's not a matter of underscore. You should define Py_LIMITED_API to
>> 0x03020000 to test the stable ABI of Python 3.2.
>>
>> http://docs.python.org/dev/c-api/stable.html
> Well, we have more than one ABI, with different guarantees. The "no leading
> underscore" one we promise not to change in maintenance releases, but we
> only preserve *API* compatibility in feature releases (mostly due to
> structs changing size).
>
> The "stable ABI" (aka Py_LIMITED_API) is the one where we promise to hide
> all the memory layout details and treat it as "additive only" so that
> binaries built with previous releases keep working. That should never break
> ABI compatibility, and only get new additions if the macro definition is
> bumped up to match the newer release.
>
> Cheers,
> Nick.
>
> P.S. I understand it was Anatoly that put the process in motion to get this
> set up. Thanks for doing that Anatoly, it's a genuinely good idea.

The stable libpython ABI with Py_LIMITED_API=0x03020000 will be tracked 
at http://upstream-tracker.org/versions/python_stable_api.html

I also added source-compatibility reports to the "public" API tracker: 
http://upstream-tracker.org/versions/python_public_api.html

Thanks.

-- 
Andrey Ponomarenko, NTC IT ROSA.

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[Python-Dev] libpython added to ABI tracker