Serhiy Storchaka added the comment: The option 3 is now available with pickle protocols >= 2 (but less efficient with protocols < 4).
Adding pickle support of Mapping views doesn't add a requirement for all classes that purport to be mappings. But if you implement pickle support of your mapping, its views become automatically pickleable. ---------- versions: +Python 3.6 -Python 3.5 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23401> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
