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by voyvf 5412 days ago
> has beta level support for loading CPython C extensions.

Is this via ctypes, or "real" support in much the same as how CPython would behave?

I ask because this is one of the features that I've been waiting (impatiently) for - I've run some Flask projects using PyPy and gunicorn, and love how fast it goes, but really want to be able to use the rest of my codebase, which unfortunately does rely on some C (and Cython) extensions. (:
2 comments
vgnet 5412 days ago
It's "real" support, using your criteria. However, it's slower in PyPy than in CPython and than what the same thing based on ctypes would be on PyPy.

If there's a pure-Python version of the C extension, it might be faster on PyPy than the C extension support that cpyext (PyPy C-API compatibility module) provides.

Cython-based code is currently incompatible (it goes well beyond the public C-API), but a GSoC project to generate ctypes-based pure-Python code from Cython is (was?) going on.

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voyvf 5412 days ago
> It's "real" support, using your criteria. However, it's slower in PyPy than in CPython and than what the same thing based on ctypes would be on PyPy. > If there's a pure-Python version of the C extension, it might be faster on PyPy than the C extension support that cpyext (PyPy C-API compatibility module) provides.

That's fine, the mere ability to run them will be nice. (:

> Cython-based code is currently incompatible (it goes well beyond the public C-API), but a GSoC project to generate ctypes-based pure-Python code from Cython is (was?) going on.

I remember that GSoC! Any idea as to what happened to it, if it was scrapped, or whatever?

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vgnet 5412 days ago
> I remember that GSoC! Any idea as to what happened to it, > if it was scrapped, or whatever?

I know it made a lot of progress in Cython-land (updates at http://rguillebert.blogspot.com/) but no real overview or high level status update has been given yet (AFAIK). Since it's from GSoC 2011, it's about time for that to happen... and for other people to start contributing code <hint, hint> :).

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pjenvey 5412 days ago
Not via ctypes, via CPyExt, a layer emulating the CPython C extension API (it actually implements a reference counting GC and everything)
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