[Python-3000] Metaclasses in Py3K (original) (raw)

Calvin Spealman ironfroggy at gmail.com
Sat Dec 9 11:53:20 CET 2006

On 12/9/06, Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:

> At 08:53 AM 12/8/2006 -0600, Guido van Rossum wrote: > >>I've been thinking about this too, and I think it's reasonable to let >>the metaclass provide the dict to be used as locals. > > [snip] > >>class C(B1, B2, metaclass=Foo):

If there's to be a special syntax for this, I don't think it should have the word "metaclass" in it -- it's too verbose and too jargony. How about class C(B1, B2) is M: ... This is concise, keeps the metaclass clearly separated from the list of bases, and avoids creating any new keywords. -- Greg

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The obvious problem with a metaclass specific syntax is that it doesnt allow for other things. Adding keyword options to class declarations means you could do things beyond just metaclasses, such as interfaces, if that happens.

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