Depending on how firm your requirements around locking are, you may find this code useful: https://github.com/mahmoud/boltons/blob/6b0721b6aeda6d3ec6f5d31be7c741bc7fcc4635/boltons/fileutils.py#L303
(docs here: http://boltons.readthedocs.io/en/latest/fileutils.html#atomic-file-saving ) Basically every operating system has _some_ way of doing an atomic file replacement, letting us guarantee that a file at a given location is always valid. atomic_save provides a unified interface to that cross-platform behavior. The code does not do locking, as neither I nor its other users have wanted it, but I'd be happy to extend it if there's a sensible default. On Sun, Apr 15, 2018 at 8:19 AM, Oleg Broytman <p...@phdru.name> wrote: > On Sun, Apr 15, 2018 at 05:15:55PM +0300, Alexey Shrub <ash...@yandex.ru> > wrote: > > В Воскресенье, 15 апр. 2018 в 2:40 , Nick Coghlan <ncogh...@gmail.com> > > написал: > > > https://bugs.python.org/issue8604#msg174104 is the relevant tracker > > > discussion > > > > Thanks all, I agree that universal and absolutly safe solution is very > > difficult, but for experiment I made some draft > > https://github.com/worldmind/scripts/tree/master/filerewrite > > Good! > > > main code here > > https://github.com/worldmind/scripts/blob/master/ > filerewrite/filerewrite.py#L46 > > Can I recommend to catch exceptions in `backuper.backup()`, > cleanup backuper and unlock locker? > > Oleg. > -- > Oleg Broytman http://phdru.name/ p...@phdru.name > Programmers don't die, they just GOSUB without RETURN. > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ >
_______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
