Raymond Hettinger wrote:
If we don't do this, then String won't be the last request. People will
want Datetime for example. Pretty much any concrete type could have a
look-a-like that wanted its own ABC and for all client code to switch
from testing concrete types.
If I remember rightly, the machinery in the ABC's to support
registration slows down some other operations with the types - do we
want to pay that price all the time?
If we do, then it may be a matter of moving some of the registration
machinery from ABCMeta up into type itself.
Cheers,
Nick.
--
Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia
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http://www.boredomandlaziness.org
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