Raymond Hettinger <raymond.hettin...@gmail.com> added the comment: It would be okay to let ValuesView inherit from Collection.
Am marking this a 3.7 only because it isn't important to anyone's actual code and there is no known use case. Technically, it isn't even a bug. The __contains__ method is supported implicitly (as it is for many classes that just define __iter__), so there is no requirement that this be recognized as a Collection. Also, the existing behavior was explicitly tested (see line 848 in Lib/test/test_collections). I'm going forward with this because it does offer a sense of neatness (in comparison to KeysView and ItemsView) and it might avoid a pedantic StackOverflow question somewhere down the line. ---------- assignee: -> rhettinger components: +Library (Lib) nosy: +rhettinger priority: normal -> low versions: -Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32467> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
