Hi, Lisandro Dalcin wrote: > Well, at this point I'm a bit confused... The unicode stuff is the > weakest point in my knowledge of Python internals...
:) that's just because Unicode is not exactly trivial - especially if you have to start thinking about bytes at some point. > Anyway, I will not be able to work on this in the next two weeks, so > if anyone wants to go on and give a try, just start applying the patch > to 'cython-devel-py3' repo (I'm not concerned at all about credits for > the original patch ;-) ) in order this does not stagnate. done. > At any > point, I can contribute testing against my project, just ask me for > help. some test cases would be greatly appreciated. :) > Finally, IMHO Cython pyx-level and generated C-level code should work > with any Python version. But your code shouldn't change semantics when you change the runtime environment. Otherwise it would become completely impossible to write portable code. > So, if in a pyx file I wrote "abc", then, by > default, it should be a ascii string for Py2 and a unicode one for > Py3. Not quite right. If you did that in a .py file, that would be the case. If you do that in Cython, a literal must not change its type, because it compiles to C. > And Cython should grow a new special 'char' type (like it has for > bint) to specify ascii string. Why is that? Two things: what's special about an ASCII string compared to a byte string in general? And: why aren't "bytes" and "bytearray" enough? > Then, at the C-level, and depending on > Python major version, the proper conversion py->c or c->py can be > managed. If not, wrapping legacy C libs and targeting Py2 and Py3 is > going to be a nightmare. It's a nightmare if your code changes behaviour. I think there should be a command line switch "-3" for compiling plain Py3 code at some point (as opposed to normal Py2 code) or maybe that should be determined by the runtime environment of the *compiler*, but the Cython language itself should stay compatible to Py2.6 for now. Stefan _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
