[Python-Dev] Accepting PEP 590 (Vectorcall)

Guido van Rossum guido at python.org
Tue May 28 10:47:19 EDT 2019

Thank you Petr for being a great BDFL-Delegate, and thanks to Mark and
Jeroen for working together. And thanks to everyone else who participated
in the discussion. Good luck with the implementation and the follow-up


On Tue, May 28, 2019 at 4:55 AM Petr Viktorin <encukou at gmail.com> wrote:

> As BDFL-Delegate, I am accepting PEP 590 -- Vectorcall: a fast calling
> protocol for CPython.
> https://www.python.org/dev/peps/pep-0590/
> There was a major last-minute change to the text (though one that was
> discussed since PyCon US): The API is not finalized yet, and it's
> provided using private names (with leading underscores). We intend to
> use the Python 3.8 cycle to get feedback from consumers, and finalize it
> in 3.9.
> Thanks to Jeroen Demeyer, who spent a lot of time pushing this forward,
> and probably has some new gray hair from interactions with me and other
> core devs. Without his PEP 580 (and its implementation), the simpler PEP
> 590 would not be possible.
> It might not be apparent if some of his interactions are taken out of
> context, but throughout the process Jeroen always worked to make Python
> better, and he acted professionally even as we made decisions he didn't
> agree with.
> Thanks to Mark Shannon for providing major insights, patiently
> explaining that they actually are good ideas, and for the initial
> implementation.
> Thanks to Stefan Behnel, Nick Coghlan, Victor Stinner and everyone else
> involved in PEPs 576, 579, 580 and 590.
> I learned a lot in this process.
> This is my first time as BDFL-delegate. If you have any criticism of the
> way I handled things, please share! (Assume I have tough skin, but keep
> to the code of conduct.) I'd be happy to know how I can improve.
> And now, I'm off to get the implementation reviewed!
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--Guido van Rossum (python.org/~guido)
*Pronouns: he/him/his **(why is my pronoun here?)*
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