On Thu, Feb 18, 2010 at 5:22 AM, Nathann Cohen <nathann.co...@gmail.com> wrote: > Hello everybody !!!! > > I have been spending hours on the same Cython problem, which I hope > you can solve instantly :-) > > I have a Cython file, which happens to be sage/numerical/mip_coin.pyx > which defines the following function : > > cdef float osi_solve(self,c_OsiSolverInterface * si,bool log,bool > objective_only) > > I would like to use this function outside of mip_coin, so I wrote in > this other file : > > cimport sage.numerical.mip_coin > from mip_coin cimport osi_solve > > Well, everything seems to be fine in this other module, though when > Sage compiles mip_coin.pyx, it looks at its .pxd file and notices the > following line : > > cdef float osi_solve(self,c_OsiSolverInterface * si,bool log,bool > objective_only) > > Well, this is (I hope) perfectly normal. As I want to be able to use > this function outside, I have to declare it in the .pxd... But then > Cython tell me the following thing : > > /usr/local/sage/devel/sage-cplex/sage/numerical/mip_coin.pxd:88:20: > Non-extern C function 'osi_solve' declared but not defined > > So it sounds like Sage does not find the declaration of osi_solve even > though it is made in mip_coin.pyx > > Please, tell me that you know where it comes from :-)
Whenever I've run into the above shortcoming in how Python extension modules worked, I've made a class that provides that method as a cdef'd method, then instantiated the class. You should email cython-devel about this, by the way. -- William -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
