Armin Ronacher wrote:
basestring is not subclassable for example. Also it requires subclassing which ABCs do not.
The use case that was cited was recognising subclasses of UserString, and that's what I was responding to. If basestring were made subclassable and UserString inherited from it, that use case would be covered. Recognising string-like objects *without* requiring subclassing is a hopeless morass to get into, in my opinion. You'll just have endless arguments about which of the zillion methods of str should be in the blessed set which confers string-ness. I also think that the ABC idea in general suffers from that problem, to one degree or another depending on the class involved. Strings are just an extreme case. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
