[Python-Dev] Should standard library modules optimize for CPython?

[Maciej Fijalkowski]

On Mon, Jun 2, 2014 at 10:43 AM, Victor Stinner
<victor.stinner at gmail.com> wrote:
> 2014-06-01 10:11 GMT+02:00 Steven D'Aprano <steve at pearwood.info>:
>> My feeling is that the CPython standard library should be written for
>> CPython,
>
> Right. PyPy, Jython and IronPython already have their "own" standard
> library when they need a different implement.
>
> PyPy: "lib_pypy" directory (lib-python is the CPython stdlib):
> https://bitbucket.org/pypy/pypy/src/ac52eb7bbbb059d0b8d001a2103774917cf7396f/lib_pypy/?at=default

it's for stuff that's in CPython implemented in C, not a
reimplementation of python stuff. we patched the most obvious
CPython-specific hacks, but it's a loosing battle, you guys will go
way out of your way to squeeze extra 2% by doing very obscure hacks.

>
> Jython: "Lib" directory (lib-python is the CPython stdlib):
> https://bitbucket.org/jython/jython/src/9cd9ab75eadea898e2e74af82ae414925d6a1135/Lib/?at=default
>
> IronPython: "IronPython.Modules" directory:
> http://ironpython.codeplex.com/SourceControl/latest#IronPython_Main/Languages/IronPython/IronPython.Modules/
>
> See for example the _fsum.py module of Jython:
> https://bitbucket.org/jython/jython/src/9cd9ab75eadea898e2e74af82ae414925d6a1135/Lib/_fsum.py?at=default
>
> Victor
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