On Jan 30, 2012 8:09 AM, "Nathann Cohen" <nathann.co...@gmail.com> wrote: > > Helloooooooo !! > > > > If you ever change a filebfrom Python to Cython for no clear good reason, I > > will be very annoyed. > > Well, the point's always to be able to rewrite code more efficiently :-p > > > > One should always use Python instead of Cython unless > > there is a clear compelling reason not to. > > Really ? O_o
Yes. I would even add this to the review checklist. > > > - takes a long time to compile > > Come ooooooon ! Half a second when you rebuild Sage !!! How bad can that be ? > It takes nearly an hour on one cpu to build the sage library now right? If you change all .py to .pyx, it might take 2 hours. That .5 seconds you site can be longer for bigger files and adds up. > > - is much harder to interactively debug sunce you can't run python code in > > the stackframe's context (yet) > > Hmmm... O_O;;; > I have no idea what the stackframe's context could be O_o Cause a traceback on the command line, then type %debug. > > > > - requires more knowledge for devs to use thus reducing the maintainability > > of sage > > To add perhaps, because of the module_list file, but why would it be harder to maintain ? The procedure is the same, a sage -b and you are done, aren't you ? > No. Maintenance = people reading, fixing bugs (all code has 'em), improving > > > - is not always faster than pure python > > ? On which codes can it be slower ? > > > > - does not support 100% of Python language features > > Arg ! And what is missing then ? > > Thaaaaaaaaaaaaaaaaaanks !!! > I'll let some Cython devs answer the above. There are also different semantics between Python and Cython. > > Nathann > > -- > 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 -- 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
