[Python-Dev] PEP 399: Pure Python/C Accelerator Module Compatibiilty Requirements (original) (raw)

Maciej Fijalkowski fijall at gmail.com
Wed Apr 6 19:24:08 CEST 2011

No worries, it wasn't even my code.  Someone donated it.  The was a discusion on python-dev and collective agreement to allow it to have semantic differences that would let it run faster. IIRC, the final call was made by Uncle Timmy.

The bug link is here:

http://bugs.python.org/issue3051

I think this PEP is precisely targeting this:

"I saw no need to complicate the pure python code for this."

if you complicate the C code for this, then please as well complicate python code for this since it's breaking stuff.

And this:

"FWIW, the C code is not guaranteed to be exactly the same in terms of implementation details, only the published API should be the same. And, for this module, a decision was made for the C code to support only lists eventhough the pure python version supports any sequence."

The idea of the PEP is for C code to be guaranteed to be the same as Python where it matters to people.

Cheers, fijal

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