No.  Python2 is obsolete, old style classes even more so.

On Thu, Jan 25, 2018 at 12:22 PM Jeroen Demeyer <J.Demeyer@ugent.be> wrote:
Do we want to support Python 2 old-style classes for multiple
inheritance? Personally, I don't think that we should, but it's
something that has to be decided.

The reason I ask is that my code from
https://github.com/cython/cython/pull/2033 is actually broken when given
an old-style class.
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