On Wed, Aug 17, 2011 at 10:32 PM, Stefan Behnel <stefan...@behnel.de> wrote: > Stefano, 11.08.2011 16:24: >> >> now that I've nailed Cython code, I'd like to get into something more >> funny. >> Currently, I'm working on a set of macros to seamlessy integrate Cython >> into >> CMake build process (in fact, I love CMake). But, I'd like to work also on >> something more essential, so... > > Here's something truly essential that's been on our TODO list for ages, and > it's not even that hard to do, given today's infrastructure (inline > functions in .pxd files, function signature overloading and all that). > > http://wiki.cython.org/enhancements/overlaypythonmodules
+1, this is a high-impact feature that should be relatively easy to dig into. > Basically, the idea is to use a .pxd for existing Python modules (especially > stdlib modules) and to override *some* names in it with fast C functions. > > Approach: > > - for each normally "import"-ed module (except for relative imports), search > for a corresponding .pxd file in both the PYTHONPATH and under > Cython/Includes/cpython/ > > - if found, build a scope for it that falls through to the scope of the > normally imported Python module, but looks up names in the .pxd namespace > first. > > For testing, write a cpython/math.pxd that contains replacements for *some* > of the functions and constants in Python's math module. > > There is obviously a bit more to it than the short wrap-up above. For > example, if none of the signatures of a function in the .pxd matches, it > would have to fall through to the module as well. That isn't all that easy > to accomplish with just a name lookup. But it's also not strictly required > for an initial implementation, it would just mean that your math.pxd > implementation would have to be provide a complete set of signatures for the > functions it offers. I think the math module is particularly friendly here. > > Interested? > > Stefan > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > http://mail.python.org/mailman/listinfo/cython-devel > _______________________________________________ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
