A bit late post, but here is my thoughts on the subject. As it looks right now, It will be virtually impossible to write code that works under both Python 3.0 and Python 2.x. This has a huge impact on Zope, because Zope as a framework does not only have a huge codebase in itself, but an even huger codebase of third-party products.
If it isn't possible to write code that works under both 2.x and 3.0, that means that all of the codebase must be moved simulatneously. Even if we made a version of Zope that works under Python 3, most third-party product would not run under Python 3. In effect, if we port Zope to Python 3, we then have *four* incompatible code bases. Zope 2 for Python 2 and Zope 2 for Python 3 and Zope 3 for Python 2 and Zope 3 for Python 3. This is not only completely unmaintainable, it's never going to happen. I can possibly see Zope 3 moving to Python 3, the Zope 3 community is still small enough and well organized and tight enough for this to work. But it has to be pointed out that any Zope 3 module that isn't also ported will be unusable. I do not see how Zope 2 will ever be ported to Python 3, because doing so would break all the thousands of third-part products out that that doesn't get ported at the same time. This of course means that Plone will never get ported to Python 3. Which in fact means that one of the most successful and biggest users of Python will never move to Python 3. And it also means that anybody that is today using Zope 3 and hoping for The plone.* modules to continue to contribute to Zope 3, will see that effort virtually die if we port Zope 3 to Python 3. I'm hoping that Guido will see the errors of his ways, and introduce a Python 2.7 that has more forwards compatibility than what has been promised for 2.6, so that there can be a useable overlap between Python 2.7 and 3.0. Maybe a 3.1 with some more backwards compatibility will be needed to, I don't know. Just my 2 cents. _______________________________________________ Zope3-dev mailing list Zope3-dev@zope.org Unsub: http://mail.zope.org/mailman/options/zope3-dev/archive%40mail-archive.com