[Python-Dev] PYC filename and optimization

[Brett Cannon]

On Thu, 5 Nov 2015 at 07:41 Barry Warsaw <barry at python.org> wrote:

> On Nov 05, 2015, at 11:33 AM, Victor Stinner wrote:
>
> >- Lib/__pycache__/os.cpython-36.pyc: default mode
> >- Lib/__pycache__/os.cpython-36.fat-0.pyc: FAT mode
> >
> >With -O:
> >
> >- Lib/__pycache__/os.cpython-36.opt-1.pyc: default mode
> >- Lib/__pycache__/os.cpython-36.fat-1.pyc: FAT mode
> >
> >
> >With -OO:
> >
> >- Lib/__pycache__/os.cpython-36.opt-2.pyc: default mode
> >- Lib/__pycache__/os.cpython-36.fat-2.pyc: FAT mode
> >
> >Is it the "correct" way to name .pyc files? I had to modify unit tests
> >which expected an exact filename.
>
> I think this is the logical extension of PEP 488 for your use case.
>

It will require tweaking importlib.util.cache_from_source() to no longer
restriction to alphanumeric-only for the optimization level, but that can
be tweaked to use `opt-` when given an alphanumeric and then to blindly use
another value otherwise.
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