-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Nov 30, 2007, at 9:31 AM, Jean-Paul Calderone wrote:
> On Fri, 30 Nov 2007 11:35:18 +0100, Christian Heimes > <[EMAIL PROTECTED]> wrote: >> Dirkjan Ochtman wrote: >>> I don't know how hard it would be for Jython, IronPython et al. to >>> support this kind of interface, but seeing as how something like >>> zope.interface relies on it (and therefore all of Twisted, too, I >>> think), it's kind of mandatory anyway. >> >> zope.interface could work without sys._getframe(). It's not mandatory >> for its API. getframe is used for a clever hack which makes declaring >> interfaces more convenient and readable. >> >> class Example: >> implements(IExample) >> > > This is a current feature of zope.interface. Therefore, > zope.interface > requires it, unless you can show an implementation of this API > which does > not depend on it. > > It is certainly true that this API could be removed from > zope.interface. > At that time, zope.interface would not depend on these frame APIs. It > would also break almost every user of zope.interface and require > them to > change to the new API. > > Don't try to mix "could work" with "does work" together. This frame hacking is also a pretty common feature of other types of systems, such as ORMs. It can make certain Python code much more readable, so "frame hacking" is clearly a useful feature, at least it seems, in the context of a class definition. Is there a way to promote this to an API that's more principled than the sys._getframe () hack, and thus more acceptable to Guido and more portable to other implementations? (Or is something like this already in Py3K, and I just haven't noticed it yet? ;). - -Barry -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iQCVAwUBR1AqbXEjvBPtnXfVAQIfUQQAnKd4ThlGtsUKcdoSj+lXa/4kHxZ5Znju sOKEWM77pTZZorQuIJjib9UI9GfaZq+HR9lcRb00ztUspNZcX7x/cSMOKFKVQT+B XiPGJvHpVttYc8Qb1bd/drcPJpK+cvXDBva10ivL8PnSzziMgV86gI1HzSoCxg4i 51X0uzuhLfE= =Hvxa -----END PGP SIGNATURE----- _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
