[Python-3000] iostack and Oh Oh
Guido van Rossum
guido at python.org
Fri Dec 1 19:19:07 CET 2006
On 12/1/06, Fred L. Drake, Jr. <fdrake at acm.org> wrote:
> On Friday 01 December 2006 12:08, tomer filiba wrote:
> > i would still like to understand how object proxying (e.g., weakrefs,
> > RPyC), could work when all/most frameworks/libraries would be based on
> > ABCs.
> That's a realy problem. zope.interface works hard to deal with proxies, but
> it probably only works with proxies based on zope.proxy.
I think the proper solution is to make isinstance() overridable by the instance.
> > the only way out of this, that i can think of, would require introducing a
> > __does_implement__ special method that will be called by
> > does_implement(), or whatever the name will be. of course you could
> > add a new ABC for that purpose, i.e., CustomImplementer.
> This only works if there's only one interface system. As soon as there are
> multiple systems at work in parallel (possibly because different libraries
> require them, even if the app doesn't care), this is going to get quite
> I wish I had some good insight on how to deal with this, but I don't. Jim
> Fulton might have some ideas since he dealt with all this for zope.interface.
> He's likely pretty busy right now, though. (And I don't know if he's on this
--Guido van Rossum (home page: http://www.python.org/~guido/)
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