On Tue, Apr 17, 2018 at 2:08 AM, Nathan Cutler <ncutler@xxxxxxx> wrote: > Background: Python 2 will be deprecated in 2020. Python 3 has been available > in all major Linux distros for years. > > Of course, Python 2 is *also* available in all major Linux distros, but this > is not going to be true for much longer. It will be deprecated and > eventually removed. > > Migration, then, is going to happen - it's just a question of "when". > > Given that Python 3 is available now, and will be supported for many years, > as opposed to Python 2 which will be going away and will not be supported, > the need to migrate our Python code to Python 3 will only become more > urgent, not less. > > Ceph contains the following Python code (please correct me if this list is > not complete): > > Python bindings (already migrated, i.e. Python 3 bindings are available) > MGR modules (migration in progress; no testing with Python 3, though) > ceph-volume (migration status: ?) ceph-volume is tested against 2.7 and a few 3.X versions. There is nothing to migrate here. > ceph-detect-init (migration status: ?) The only thing that uses ceph-detect-init is ceph-disk I believe, so it should be removed by the N release along with ceph-disk > ceph-disk (migration status: ?, deprecated, will be removed in Nautilus) > Python scripts needed for "make check" (migration in progress) > Python scripts needed for QA/teuthology (migration status: ?) > Other Python scripts (not packaged) > > Ideally this email would spark a discussion on how to perform the > transition. In my imagination, the transition could go like this: > > Mimic - after a "best effort" to migrate, some Python code still runs on > Python 2, but Shaman has a Python 3 build flavor and teuthology is capable > of testing in Python 3-only environment. > > Nautilus - all remaining packaged Python code has been migrated and > explicitly runs (and is tested) on Python 3. Python 2 versions of our code > do not need to be provided or packaged, because all target platforms support > Python 3. There might still be some Python 2 scripts in the git repo, but > these are either special cases or for developer use only, and are not > packaged. > > Nathan > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
