Nick Coghlan <[EMAIL PROTECTED]> wrote: > Exactly. My advice is to use new-style classes unless you have a > reason not to (if you're inheriting from a builtin type, then there > is no need to inherit from object as well - the builtin types > already have the correct basic type).
Except for Exception! Exception and anything that inherits from it is an old style class. I discovered the other day that you can't throw a new style class as an exception at all, eg >>> class MyException(object): pass ... >>> raise MyException Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: exceptions must be classes, instances, or strings (deprecated), not type >>> (not a terribly helpful message - took me a while to work it out!) wheras old style works fine... >>> class MyOldException: pass ... >>> raise MyOldException Traceback (most recent call last): File "<stdin>", line 1, in ? __main__.MyOldException: <__main__.MyOldException instance at 0xb7df4cac> >>> After that I recalled a thread on python-dev about it http://mail.python.org/pipermail/python-dev/2004-August/046812.html -- Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
