On Sun, 10 Feb 2013 22:32:50 +1000 Nick Coghlan email@example.com wrote:
Replaces many use cases for dynamic setting of ``__metaclass__``
For use cases that don't involve completely replacing the defined class, Python 2 code that dynamically set ``__metaclass__`` can now dynamically set ``__init_class__`` instead. For more advanced use cases, introduction of an explicit metaclass (possibly made available as a required base class) will still be necessary in order to support Python 3.
So, what are the use cases? I probably write metaclasses once a year, I wonder how much incentive there is to bring an additional complication to the already complicated class construction process.