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Author vstinner
Recipients Michael.Felt, corona10, miss-islington, petdance, ronaldoussoren, shihai1991, vstinner
Date 2020-07-08.09:06:12
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Message-id <1594199172.07.0.48977398326.issue40170@roundup.psfhosted.org>
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Content 
> New changeset 45ec5b99aefa54552947049086e87ec01bc2fc9a by Victor Stinner in branch 'master':
> bpo-40170: PyType_HasFeature() now always calls PyType_GetFlags() (GH-19378)

This change causes performance issues on macOS, see discussion starting at:
https://bugs.python.org/issue39542#msg372962

So I reverted the change. I will wait until my PEP 620 is accepted before considering to reapply it.

If it's reapplied, we have to make sure that Python internals currently using PyTuple_Check() still access directly PyTypeObject.tp_flags member. For example, a new _PyTuple_Check() function could be added and uses the internal _PyType_HasFeature() function.
History
Date User Action Args
2020-07-08 09:06:12vstinnersetrecipients: + vstinner, ronaldoussoren, Michael.Felt, corona10, miss-islington, shihai1991, petdance
2020-07-08 09:06:12vstinnersetmessageid: <1594199172.07.0.48977398326.issue40170@roundup.psfhosted.org>
2020-07-08 09:06:12vstinnerlinkissue40170 messages
2020-07-08 09:06:12vstinnercreate