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Tue Jul 10 09:29:41 EDT 2018 · https://mail.python.org/pipermail/python-dev/2018-July/154574.html

On 2018-07-10 14:59, INADA Naoki wrote:
> Currently, we create temporary long object for passing argument.
> If there is protocol for exposeing format used by PyArg_Parse*, we can
> bypass temporal Python object and call myfunc_impl directly.

Indeed, I already mentioned this at
https://www.python.org/dev/peps/pep-0579/#allowing-native-c-arguments

The way I see it, these kind of improvements should be done on top of 
PEP 580. Maybe I didn't emphasize this enough, but one of the goals of 
PEP 580 is to create an *extensible* protocol where such features can 
easily be added later in a compatible way.

Jeroen.

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[Python-Dev] Micro-benchmarks for PEP 580