It's been decided to go w/ the "nonlocal" keyword to declare outer variables (ala the "global" keyword) rather than using an alternate assignment operator (which was one of the competing proposals). It's too late to make a change such as your suggestion because PEP 3104 ( http://www.python.org/dev/peps/pep-3104/ ), which proposed "nonlocal", has already been accepted (and BDFL-blessed IIRC).
Furthermore, there's no precedent for Python operators to use both a keyword and punctuation together like "set!", and "set" can't be used instead as it's the name of a builtin type (in Py3K). In the future, searching the list archives can be quite helpful. - Chris Rebert On Wed, May 28, 2008 at 10:55 PM, Daniel Wong <[EMAIL PROTECTED]> wrote: > I'm confused by the section on "no alternate binding operator" in PEP > 3099. On the one hand, it says no alternative binding operator will be > considered; yet the link provided shows that Guido is in favor of > developing a syntax for non-local assignment. Please excuse me if this > post violates that rule. Here's my suggestion on what the syntax > should look like: > > set! var val > > Scheme users will recognize this syntax, which has the distinct > advantage of not being confusable with regular assignment; whereas, > this is an unfortunate feature of :=, which Guido has already > rejected. > > The way this is supposed to work is you go to the inner-most scope in > which var is declared and change its value there to val. If var does > not occur in any containing scope, you could raise an > UndeclaredVariable exception. > > Thoughts? > > Daniel > _______________________________________________ > 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/cvrebert%40gmail.com > _______________________________________________ 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
