Karthikeyan Singaravelan <tir.kar...@gmail.com> added the comment:
https://docs.python.org/3/library/stdtypes.html#dictionary-view-objects > Keys views are set-like since their entries are unique and hashable. If all > values are hashable, so that (key, value) pairs are unique and hashable, then > the items view is also set-like. (Values views are not treated as set-like > since the entries are generally not unique.) For set-like views, all of the > operations defined for the abstract base class collections.abc.Set are > available (for example, ==, <, or ^). In Python 2 keys() and values() return a list where __eq__ is implemented. In Python 3 view objects are returned. This can be seen in Python 2 also using viewkeys and viewvalues where viewvalues() is False. So this is not a bug but I am not sure if docs can be improved to clarify this further. $ python2 Python 2.7.14 (default, Mar 12 2018, 13:54:56) [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> a = {'a': 1} >>> b = {'a': 1} >>> a.viewkeys() == b.viewkeys() True >>> a.viewvalues() == b.viewvalues() False >>> a.values() == b.values() True ---------- nosy: +rhettinger, xtreak _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue37119> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
