At 09:17 AM 4/28/2007 -0700, Guido van Rossum wrote: >On 4/28/07, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote: > > Aside from the way in which `x' can already lie: > > > > >>> class X(object): > > ... __class__ = property(lambda self: int) > > ... > > >>> isinstance(X(), int) > > True > > >>> > > > > Is this behavior changed/going to be changed in Py3k? > >I'm not particularly enamored with it, but I believe it once served a >purpose for Zope. Does anyone know if it is still needed?
AFAIK, it's still used to support proxies in Zope 3, and my own ProxyTypes library on the Cheeseshop (and some other libraries I've written that use it) depend on it. I believe Chandler uses this, too. In all cases, it's to allow proxies to appear to be the object they're proxying. I wouldn't be surprised if weakref.proxy does the same thing. _______________________________________________ Python-3000 mailing list [email protected] http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
