Guido van Rossum wrote: > > I'd like to make None a keyword. This prevents dumb users from > assigning to it and screwing themselves, and can cause a slight > speedup because using None avoids two dict lookups. > > - Any objections? +1 but only if you use the standard mechanism for this: warnings in 2.3, SyntaxError in 2.4. > - Can somebody help me implement this? I've got the parser changes > ready, but not the compiler changes. > > Believe it or not, Zope3 contains code that will break with this > change: there are functions with a default argument of the form > None=None as a speedup hack. I think this is an argument *for* the > change. :-) Zope3 is not the only software using these kind of hacks to work around the builtins lookups. -- Marc-Andre Lemburg CEO eGenix.com Software GmbH ______________________________________________________________________ Company & Consulting: http://www.egenix.com/ Python Software: http://www.egenix.com/files/python/
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