[issue12445] dict view values objects are missing tp_richcmp and tp_as_number

[Inada Naoki]

Inada Naoki <songofacandy at gmail.com> added the comment:

> Well, surely there are reasonable semantics :), because dict.values ==
> dict.values was comparable before we had view objects.

Because it was list.

Now values view is not sequence-like or set-like.

>>> {"a": "foo", "b": "bar"}.values() == {"a": "bar", "b": "foo"}.value()
True if set-like.  False if sequence-like.

If you want Python 2 behavior, you should convert it to list.
Then you can use "sequence" semantics.

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<https://bugs.python.org/issue12445>
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