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Re: Running code from source that includes extension modules

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  Re: Running code from source that includes extension modules Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-10-03 10:01 +0100

#55406 — Re: Running code from source that includes extension modules

On 2 October 2013 23:28, Michael Schwarz <michi.schwarz@gmail.com> wrote:
>
> I will look into that too, that sounds very convenient. But am I right, that to use Cython the non-Python code needs to be written in the Cython language, which means I can't just copy&past C code into it? For my current project, this is exactly what I do, because the C code I use already existed.

It's better than that. Don't copy/paste your code. Just declare it in
Cython and you can call straight into the existing C functions cutting
out most of the boilerplate involved in making C code accessible to
Python:
http://docs.cython.org/src/userguide/external_C_code.html

You'll sometimes need a short Cython wrapper function to convert from
Python types to corresponding C types. But this is about 5 lines of
easy to read Cython code vs maybe 30 lines of hard to follow C code.

Having written CPython extension modules both by hand and using Cython
I strongly recommend to use Cython.


Oscar

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