This has been a long discussion already. Let me try to summarize. My question was :
*Do you agree that sage release 9.1 (and most of the 9.1.betas) will not be kept compatible with Python 2 ?* Some people give a more or less clear *positive* answer : Chapoton, Bissey, Gourgoulhon, Kaufmann, Novoseltsev, Koeppe, Mantysalo, Rojas, Isuru, Stein, Dunfield, Pasechnik (*12*) Some people give a strong *negative* answer : Bruin, Bray (*2*) Some people did not answer the question in a clear way, but still said *something* : Palmieri, Roe, King, Crisman, Delecroix, Scrimshaw, Kliem, Labbé, Braun (*9* ) Among them, I would say that maybe 5 people were rather negative on the question. I hope that I have not forgotten anybody or misinterpreted wildly. [A] It seems to me that the conclusion of the vote is rather clear, and that we should not feel obliged to make 9.1 compilable with python2. ==> I have therefore changed the controversial wiki page, to make only the statement that 9.0 is compilable with python2. No more promise for the future. [B] I understand and approve the concerns about our user base. We should really try harder to listen more and help people that are simple users. So here is my proposal. * Starting from now, we allow ourselves to move on, using 9.1 betas and further releases for external python3 updates, including switch to ipython7, which seems to me the most urgent matter. But we also do not introduce python3-only code in our own code base if we can avoid it. * Concerning semantic versioning, I would advocate to use 10.0 as the first release where all compatibility code will be removed, hence pure py3. This may take some time, given the sparse work force. Once done, we allow ourself to use python3-only syntax in our own codebase, such as "yield from". Therefore, we can use 9.1, 9.2 and so on until somebody™ does the job of cleaning up sagemath codebase from remains of py2-only code. I have tried to make a balanced and reasonable proposal. Applause or scream at your will. Frederic Le dimanche 5 janvier 2020 20:44:10 UTC+1, Frédéric Chapoton a écrit : > > Hello, > > I would like to suggest that the sooner we drop Python 2 support the > better. We still need to handle the upgrade to ipython7 and the > compatibility with python 3.8. All this will be made very difficult if we > insist on maintaining a codebase that is both compatible with python 2 and > python 3. > > So, please vote : > > > > Frédéric > > > > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/9db91206-3a7c-434a-8b07-7656e5b5f458%40googlegroups.com.
