On 2019-04-27 11:26, Mark Shannon wrote:
Specifically, and this is important, PEP 580 cannot implement efficient calls to class objects without breaking the ABI.
First of all, the layout of PyTypeObject isn't actually part of the stable ABI (see PEP 384). So, we wouldn't be breaking anything by extending PyTypeObject.
Second, even if you don't buy this argument and you really think that we should guarantee ABI-compatibility, we can still solve that in PEP 580 by special-casing instances of "type". Sure, that's an annoyance but it's not a fundamental obstruction.
Jeroen. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
