On 2016-10-10 17:31, Simon King wrote:
I just tested that in the current Sage development version my
proof-of-concept would still work.
But still Python 2, right?
And looking at
_PyType_CalculateMetaclass, I don't see why it wouldn't work in Python3.
Maybe I'm misunderstanding you, but what I wanted to say is: Python 3
doesn't have any place to hook a custom metaclass. In Python 3, with
class X(B1, ..., Bn)
the metaclass of X must be one of the metaclasses of the Bi, there is no
way to override it (except of course when you explicitly specify the
metaclass). Of course, I can always be wrong...
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