Armin Rigo, 15.05.2012 18:34: > On Tue, May 15, 2012 at 5:56 PM, Yury Selivanov wrote: >> While I don't like some design quirks of Cython, I think that it's far >> better than any ffi or ctypes-like solution. Essentially, it's an ffi >> merged with the language, not a separate module. And that's a pretty >> unique approach. Why not focus on improving Cython design and moving >> toward some superset of Python language, that every implementation >> should support natively? > > I'm quite sure it will never happen. See for example the new section > "Pure Python Mode" in http://docs.cython.org/src/tutorial/pure.html: > it is again about adding ffi-like glue to Python files. It is a > reasonable next step in the Cython project, but it shows precisely > that there is no chance to add all of Cython into the Python language > definition. > > If I got you correctly, such ffi-like glue code is the part that you > dislike. I agree with you, but I don't think we can hope for a > solution with no glue at all; instead, we can try to minimize it as > much as possible. I may be wrong, but until proven otherwise, I am > under the impression that LuaJIT's approach leads to significantly > less glue code than Cython's Pure Python Mode. (This is true even > though the former is complete and the latter so far not: from the > Cython docs, "A limited attempt is made to emulate these more complex > types, but only so much can be done from the Python language.")
I dislike the idea of having yet another way of declaring external C APIs, though. Basically, all that's really lacking in Cython's pure Python mode is the ability to talk to C code, simply because that currently can't work from uncompiled Python code. If there was a way to build a ctypes-like thing on top of Cython's declarations, that could also be used to improve Cython's pure mode, in addition to becoming the preferred way of doing C code interaction in JIT compiled Pythons. Stefan _______________________________________________ pypy-dev mailing list pypy-dev@python.org http://mail.python.org/mailman/listinfo/pypy-dev
