There is no simple and perfect way to really test that fully now. Some things that can be done right now in the code of packages :
* check that print is used in a python3 compatible way * check that cmp() is not used * check that .iteritems, .iterkeys are not used An useful diagnostic tool is "2to3" ; another one is "pep8" (to find deprecated syntax, for example syntax of raise). Another way is to try to launch your module using "python -3". The best way forward is to move as quickly as possible to a working python3+sage. We still have for example to make sage doctest system work with python3. Frederic https://stackoverflow.com/questions/40886456/how-to-detect-if-code-is-python-3-compatible https://stackoverflow.com/questions/40815079/checking-code-for-compatibility-with-python-2-and-3 Le samedi 14 octobre 2017 11:51:01 UTC+2, John Cremona a écrit : > > How can we be sure that new code witten by people (like me) who are > not python2/3 experts does not regress? > > Also, I can see that projects which build on top of Sage will one day > have to make sure that their code is all python3-compliant (I am > thinking of the LMFDB). What's the simplest way of testing that now, > to see where the issues will lie? > > John > > On 13 October 2017 at 20:19, 'Julien Puydt' via sage-devel > <sage-...@googlegroups.com <javascript:>> wrote: > > Hi, > > > > Le 13/10/2017 à 17:56, Frédéric Chapoton a écrit : > >> Cool, no ? Or maybe nobody cares ? > > > > Extremely cool! > > > >> Many things are still not working. The cmp problem has been much > >> reduced, but still not fully fixed. On our way is a large-scale unicode > >> problem, and maybe another large scale hash problem. > > > > Why are unicode and hash problems? > > > > Snark on #sagemath > > > > -- > > You received this message because you are subscribed to the Google > Groups "sage-devel" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sage-devel+...@googlegroups.com <javascript:>. > > To post to this group, send email to sage-...@googlegroups.com > <javascript:>. > > Visit this group at https://groups.google.com/group/sage-devel. > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
