Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:
Because ABCs set minimum standards for compliance, they can't be extended without breaking existing code that registers to the ABC. Brandt added __or/ior__ support to some of the mapping classes in the standard library, but it is a fact of life that there will always be some mapping classes that don't have __or/ior__ support. It is an optional feature. It is possible add new ABC subclasses with the extra methods, but I don't think that is worth it. The effort for a mapping class maintainer to change which class it inherits from or registers to is about equal to the effort to just add the two methods. So, I think your best bet is to propose PRs for individual mapping classes on a case-by-case basis. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43085> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
