On 4/8/07, Paul Pogonyshev <[EMAIL PROTECTED]> wrote: > Guido van Rossum wrote: > > What if someone passes a callable that doesn't have the expected signature? > > Well, I don't know a way to catch such situations now, so removing > callable() will not make it worse (even if you don't know about hasattr > trick above.)
My point is that it's futile to use callable() -- even if it passes, you have no assurance that you actually have a valid callback. So why bother with it at all? It's counter to the spirit of Python. If someone passes you a bad callback, they will see a traceback when you call it. Then they fix their program. That's how it's supposed to work. -- --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
