I'll ask here what I asked on the pull request. Can you give a list of the things that we would have to do to support both. I'm concerned about the annoyance factor here. Obviously, we've had a compatibility file for some time, so we are no strangers to such things, but I'd like to know what we'd be getting into here, beyond the obvious print() instead of print.
Aaron Meurer On Thu, Jul 25, 2013 at 9:36 AM, Sean Vig <[email protected]> wrote: > For anyone that's interested, I have a WIP branch up [1] that has supports > both Python 2 and 3 from a single codebase. All the tests and doctests are > passing, but there are a couple things that still need to be worked out > before it would be ready to go. > > Sean > > [1] https://github.com/sympy/sympy/pull/2318 > > > On Mon, Jul 8, 2013 at 12:28 PM, Aaron Meurer <[email protected]> wrote: >> >> >> >> >> On Mon, Jul 8, 2013 at 11:41 AM, Ondřej Čertík <[email protected]> >> wrote: >>> >>> On Mon, Jul 8, 2013 at 10:07 AM, Aaron Meurer <[email protected]> wrote: >>> > From my understanding, it's easiest to do this if we don't support >>> > Python >>> > 3.2, and even easier if we don't support Python 2.6 (but we should >>> > continue >>> > to support 2.6 for a while). >>> > >>> > I am -1 to this, just because we already have 2to3 working, and so we >>> > should >>> > not waste our time fixing what isn't broken. >>> >>> >>> It's not a big deal now, so we can revisit this later. I posted it >>> here to think about this. >>> >>> That being said, I can see many things that are broken, for example: >>> >>> * we need to ship the same tarball for Python 3.2 and 3.3 (and keep >>> adding tarballs for higher version of Python) so that pip installs it >>> >>> * that we cannot ship just one tarball for all Python versions >>> >>> * that installing sympy (from git) into Python 3 takes a long time >>> >>> * If you want to hack using Python 3 (that implies in git), you can't. >>> The only way is to hack in Python 2.7 and keep translating to Python >>> 3. In fact the translation takes such a long time on my laptop, that I >>> don't use Python 3 with sympy and git. It's nice to use the released >>> tarball in Python 3 though, that works great. >> >> >> It's worth pointing out that if you re-run use2to3, it only rebuilds the >> files that have changed. While this may often be a lot, especially if you >> don't run it very often, or if you checkout an old commit, if you are just >> hacking around, it isn't much. You could even add a git hook that does it >> automatically every time you checkout a commit. >> >> I agree it could be faster, though. 2to3 maybe should have been written in >> C. >> >> Aaron Meurer >> >>> >>> Ondrej >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sympy" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/sympy. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/sympy. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sympy. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
