[Python-ideas] solving multi-core Python

Eric Snow ericsnowcurrently at gmail.com
Wed Jun 24 06:19:07 CEST 2015

On Sun, Jun 21, 2015 at 4:54 AM, Stefan Behnel <stefan_ml at behnel.de> wrote:
> I also had some discussions about these things with Nick before. Not sure
> if you really meant PEP 384 (you might have) or rather PEP 489:
> https://www.python.org/dev/peps/pep-0489/

I did mean PEP 384, but PEP 489 is certainly related as I expect we'll
make participation in this subinterpreter model by extension modules
opt-in.  Basically they will need to promise that they will work
within the restricted environment.

> I consider that one more important here, as it will eventually allow Cython
> modules to support subinterpreters. Unless, as you mentioned, they use
> global C state, but only in external C code, e.g. wrapped libraries. Cython
> should be able to handle most of the module internal global state on a
> per-interpreter basis itself, without too much user code impact.


> I'm totally +1 for the idea. I hope that I'll find the time (well, and
> money) to work on PEP 489 in Cython soon, so that I can prove it right for
> actual real-world code in Python 3.5. We'll then see about subinterpreter
> support. That's certainly the next step.

That would be super.


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