On 2015-03-06 08:32, Vincent Delecroix wrote:
__cmp__ is gone in Python 3 see [1]. The way to implement comparisons wil be through the various __lt__, __eq__, etc. There is already a ticket opened for dealing with that in #16537. It would be better to think about a solution that takes this into account. I do not know the Cython way.
I think my ticket is orthogonal to that. It's not because __cmp__ is gone in Python 3, that we cannot use a Python2-style _cmp_() function to implement rich comparison.
Currently, when a rich comparison operator is called on an Element, it checks for _richcmp_, which is implemented by default using _cmp_. There is nothing wrong with keeping that behaviour in Python 3.
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