Raymond Hettinger added the comment: For WeakKeyDictionary, I suspect that adding a __missing__() call would make the API more tricky and would likely cause more problems than it solves.
Without a compelling use case, my recommendation would be to leave it alone. (FWIW, all of the weak reference data structures have a long history of bugs, it seems that this is difficult to get right). ---------- nosy: +rhettinger type: -> enhancement versions: -Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue31254> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
