On Wed, Jun 2, 2010 at 4:11 PM, Steven D'Aprano <steve-remove-t...@cybersource.com.au> wrote: > On Wed, 02 Jun 2010 17:17:11 -0400, Nathan Rice wrote: >> My apologies if someone already mentioned this and I missed it but... >> >> class.__instancecheck__(self, instance) - Return true if instance should >> be considered a (direct or indirect) instance of class. If defined, >> called to implement isinstance(instance, class). >> >> class.__subclasscheck__(self, subclass) - Return true if subclass should >> be considered a (direct or indirect) subclass of class. If defined, >> called to implement issubclass(subclass, class). > > The original poster needs to support Python 2.5 and 2.6, but > __instancecheck__ and __subclasscheck__ are only supported in 2.6 or > higher, so this doesn't help.
Even in 2.6+, good luck trying to define new methods on class `type` (the metaclass of float and Decimal). Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
