Re: [Python-Dev] Alternative to more ABCs [was:] Iterable String Redux (aka String ABC)

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 | ncoghlan@gmail.com | Brisbane, Australia --------------------------------------------------------------- http://www.boredomandlaziness.org