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Wed Apr 6 22:35:17 CEST 2011 · https://mail.python.org/pipermail/python-dev/2011-April/110509.html

James Y Knight, 06.04.2011 17:03:
> On Apr 6, 2011, at 10:08 AM, Nick Coghlan wrote:
>> Argument handling is certainly a tricky one - getting positional only
>> arguments requires a bit of a hack in pure Python code (accepting
>> *args and unpacking the arguments manually), but it comes reasonably
>> naturally when parsing arguments directly using the C API.
>
> Perhaps the argument handling for C functions ought to be enhanced to work like python's argument handling, instead of trying to hack it the other way around?

FWIW, Cython implemented functions have full Python 3 semantics for 
argument unpacking but the generated code is usually faster (and sometimes 
much faster) than the commonly used C-API function calls because it is 
tightly adapted to the typed function signature.

Stefan

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Pure Python/C Accelerator Module Compatibiilty Requirements