In practical terms, maintaining an LTS just means that if a substantial problem arises with using SymPy 1.5 on Python 2.7 we could add a fix for it on the 1.5 branch and release 1.5.x with that fix. I can't see what that problem would be though apart from, say, an update to pypi that means 1.5 doesn't install any more.
If something like that happened then I don't see why we couldn't issue a release but it seems unlikely that it would be necessary. In any case it doesn't require us to keep the the master branch working on 2.7 going forwards. -- Oscar On Sun, 15 Dec 2019 at 06:00, Jason Moore <moorepa...@gmail.com> wrote: > > Python 2.7 seems to be about 30% of the downloads still: > https://pypistats.org/packages/sympy > > Matplotlib is maintaining an LTS for Python 2.7 (I think), not sure about > Jupyter. > > Jason > moorepants.info > +01 530-601-9791 > > > On Sat, Dec 14, 2019 at 9:07 PM Aaron Meurer <asmeu...@gmail.com> wrote: >> >> Quite a few other large packages have already dropped Python 2 support >> for over a year. matplotlib and Jupyter already dropped it. I'm not >> aware of many issues. >> >> Aaron Meurer >> >> On Sat, Dec 14, 2019 at 4:47 PM Isuru Fernando <isu...@gmail.com> wrote: >> > >> > FYI, NumPy has already dropped python 2.7 support in 1.17.0 in July. They >> > are supporting 1.16.x until January, 1 2020 and 1.16.x will no longer be >> > supported. >> > >> > Isuru >> > >> > On Sat, Dec 14, 2019 at 5:36 PM Oscar Benjamin >> > <oscar.j.benja...@gmail.com> wrote: >> >> >> >> I don't see why anything dramatic will happen when NumPy drops support >> >> for Python 2.7. The current releases of both NumPy and SymPy will >> >> still be available for Python 2.7. Gradually over time more new >> >> releases will emerge that can't be installed on Python 2.7 but nothing >> >> will immediately break for people who continue to use 2.7 with NumPy >> >> and/or SymPy. Those users will just be stuck with the current versions >> >> of 3rd party packages as well as an old version of the interpreter. >> >> >> >> On Sat, 14 Dec 2019 at 23:28, Jason Moore <moorepa...@gmail.com> wrote: >> >> > >> >> > I'd like for us to hang on to Py27 until we see what happens when NumPy >> >> > drops it. I personally feel like shit might hit the fan. >> >> > >> >> > Jason >> >> > moorepants.info >> >> > +01 530-601-9791 >> >> > >> >> > >> >> > >> >> > On Sat, Dec 14, 2019 at 3:05 PM Aaron Meurer <asmeu...@gmail.com> wrote: >> >> >> >> >> >> >> >> >> >> >> >> On Sat, Dec 14, 2019 at 2:31 PM Oscar Benjamin >> >> >> <oscar.j.benja...@gmail.com> wrote: >> >> >>> >> >> >>> Python 2.7 support can be dropped in SymPy 1.6 (the next release). We >> >> >>> don't yet know though if we will need a 1.5.1 bugfix release though so >> >> >>> I'd prefer to give it a few weeks before dropping Python 2.7 from >> >> >>> Travis. I think that as soon as Python 2.7 is not tested SymPy will >> >> >>> stop working on it because it will become unimportable within a few >> >> >>> PRs. >> >> >> >> >> >> >> >> >> We should make sure __init__.py stays importable so we can give an >> >> >> error message about Python 2 not being supported. >> >> >> >> >> >>> >> >> >>> >> >> >>> Once 2.7 is removed from Travis there are a number of places in the >> >> >>> codebase that can be cleaned up (noted with the "dropping Python 2" >> >> >>> label) and a bunch of compat code that can be removed. >> >> >>> >> >> >>> SymPy's current Python version support policy is here >> >> >>> https://github.com/sympy/sympy/wiki/Python-version-support-policy >> >> >>> and says that a version of Python is supported until it reaches EOL. >> >> >>> For Python 3.5 that is September 2020 according to the table here: >> >> >>> https://devguide.python.org/#status-of-python-branches >> >> >>> >> >> >>> Dropping 3.5 before then wouldn't match the support policy but if >> >> >>> there are strong advantages then it can be discussed. >> >> >> >> >> >> >> >> >> We might need to become more aggressive at some point. Python is >> >> >> planning on speeding up their release cadence so with the current >> >> >> policy there will be more Python versions for us to support. >> >> >> >> >> >> Aaron Meurer >> >> >> >> >> >>> >> >> >>> >> >> >>> -- >> >> >>> Oscar >> >> >>> >> >> >>> On Sat, 14 Dec 2019 at 15:26, Francesco Bonazzi >> >> >>> <franz.bona...@gmail.com> wrote: >> >> >>> > >> >> >>> > Great new! >> >> >>> > >> >> >>> > Are we going to drop Python 2.7 and 3.4 support? >> >> >>> > >> >> >>> > There are two nice things to have: >> >> >>> > >> >> >>> > support for type annotations with enforcement in testing. >> >> >>> > integration of MatchPy into SymPy (unfortunately this step requires >> >> >>> > to drop Python 3.5 support as well, as MatchPy is Python 3.6+ only). >> >> >>> > >> >> >>> > >> >> >>> > On Saturday, 14 December 2019 02:38:23 UTC+1, Oscar wrote: >> >> >>> >> >> >> >>> >> On Fri, 13 Dec 2019 at 21:41, Oscar Benjamin >> >> >>> >> <oscar.j...@gmail.com> wrote: >> >> >>> >> > >> >> >>> >> > Hi all, >> >> >>> >> > >> >> >>> >> > It is my pleasure to announce the release of SymPy 1.5 today. I >> >> >>> >> > have >> >> >>> >> > uploaded the release files to for this release to PyPI so you >> >> >>> >> > should >> >> >>> >> > be able to install or upgrade with >> >> >>> >> > >> >> >>> >> > $ pip install -U sympy >> >> >>> >> >> >> >>> >> I just realised I didn't give the hashes for the release files >> >> >>> >> which are >> >> >>> >> >> >> >>> >> 8ae4a95378304ed4081921767fe46f0adf5921bf471c9f5df425abf2c655d751 >> >> >>> >> sympy-1.5-py2.py3-none-any.whl >> >> >>> >> 31567dc010bff0967ef7a87210acf3f938c6ab24481581fc143536fb103e9ce8 >> >> >>> >> sympy-1.5.tar.gz >> >> >>> >> b880a0819efac35661e59ec4341e3df7667e51f952033b12a91361f792458639 >> >> >>> >> sympy-docs-html-1.5.zip >> >> >>> >> 2f366888c0efc86bf031e1db4dd988463c26583a8582e33b4bc85eb6b14d4ea1 >> >> >>> >> sympy-docs-pdf-1.5.pdf >> >> >>> >> >> >> >>> >> I'm interested to know: does anyone check these? >> >> >>> >> >> >> >>> >> -- >> >> >>> >> Oscar >> >> >>> > >> >> >>> > -- >> >> >>> > 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 sympy+unsubscr...@googlegroups.com. >> >> >>> > To view this discussion on the web visit >> >> >>> > https://groups.google.com/d/msgid/sympy/b17bed68-2653-4bb9-8b54-fa19eaeb18e3%40googlegroups.com. >> >> >>> >> >> >>> -- >> >> >>> 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 sympy+unsubscr...@googlegroups.com. >> >> >>> To view this discussion on the web visit >> >> >>> https://groups.google.com/d/msgid/sympy/CAHVvXxTr0NMn5w2ZKbbCTRdtZHp0Fq4H18vrHCFr8%2BK5KbO%2BbA%40mail.gmail.com. >> >> >> >> >> >> -- >> >> >> 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 sympy+unsubscr...@googlegroups.com. >> >> >> To view this discussion on the web visit >> >> >> https://groups.google.com/d/msgid/sympy/CAKgW%3D6JgEuAWSX%2B37dfDkRvxGJYd23NFHAvy%2BaCD59VShLFqQg%40mail.gmail.com. >> >> > >> >> > -- >> >> > 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 sympy+unsubscr...@googlegroups.com. >> >> > To view this discussion on the web visit >> >> > https://groups.google.com/d/msgid/sympy/CAP7f1AiJqLahHrRVk%3D3UiYCvh5ERVrKqwLAOS0GZyUEi9CYCbA%40mail.gmail.com. >> >> >> >> -- >> >> 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 sympy+unsubscr...@googlegroups.com. >> >> To view this discussion on the web visit >> >> https://groups.google.com/d/msgid/sympy/CAHVvXxSJy7ufBPOYh1Gx%3DY9UQ_YmXThO0aRtkY5wd5RMi8%3D5ig%40mail.gmail.com. >> > >> > -- >> > 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 sympy+unsubscr...@googlegroups.com. >> > To view this discussion on the web visit >> > https://groups.google.com/d/msgid/sympy/CA%2B01voPuK1Y8gDxJNot6ik%3D71D40x8CohQOTnT1_x2krBosWxw%40mail.gmail.com. >> >> -- >> 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 sympy+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/CAKgW%3D6K8ucOVy%3Dew2bd3Mjatq99h59wAiwMrYhuARKWR9ThXFw%40mail.gmail.com. > > -- > 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 sympy+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAP7f1AgQmjtzsi04j80n0knQm%2BLggo91HotUe1JsyrQQH4%3DnRA%40mail.gmail.com. -- 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 sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAHVvXxT%3Dy8VMgqruKnP2JVWY0yUJyQshF%3D-J_AwBQua6EjuPgg%40mail.gmail.com.
