[Python-Dev] On the METH_FASTCALL calling convention (original) (raw)

INADA Naoki songofacandy at gmail.com
Fri Jul 6 20:20:40 EDT 2018


On Sat, Jul 7, 2018 at 7:29 AM Victor Stinner <vstinner at redhat.com> wrote:

Hi, I designed FASTCALL with the help of Serhiy for keywords. I prepared a long email reply, but I found an opportunity for optimisation on **kwargs and I need time to see how to optimize it. Maybe there is a need for passing **kwargs as a dict at C level, but use FASTCALL for positional arguments? I only know dict.update() which would benefit of that. All other functions are fine with FASTCALL for keywords. Victor

I agree with Jeroen. If only few methods can be improved, it's not necessary. METH_VARARGS | METH_KEYWORDS is fine.

-- INADA Naoki <songofacandy at gmail.com>



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