On Fri, Sep 13, 2002, Guido van Rossum wrote: >Aahz: >> >> I'm curious, and I don't recall having seen anything about this: why >> wouldn't we simply use attributes to hold this information, like >> __slots__? After all, attributes get inherited, too, and there's no >> need to pretzel the syntax. Using attributes IMO would make it easier >> to handle the case where derived classes need to mangle type and >> interface declarations. > > That's exactly what Zope does with the __inherits__ attribute. > > But it's got limitations: there's only one __inherits__ attribute, so > it isn't automatically merged properly on multiple inheritance, and > adding one new interface to it means you have to copy or reference the > base class __inherits__ attribute. Isn't that what metaclasses are for? -- Aahz (aahz@pythoncraft.com) <*> http://www.pythoncraft.com/ Project Vote Smart: http://www.vote-smart.org/
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