Guido van Rossum wrote:
We could also consider this a general weakness of the "alternative constructors are class methods" pattern. If instead these alternative constructors were folded into the main constructor (e.g. via special keyword args) it would be altogether clearer what a subclass should do.
A useful guideline might be that class methods can be provided as sugar for alternative constructors, but they should all funnel through the main constructor. There's a convention like this in the Objective-C world where one of an object's "init" methods is supposed to be documented as the "designated initialiser", so that there is just one thing that subclasses need to override. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
