rzed <[EMAIL PROTECTED]> writes: To simplify take
> class T(object): > def __new__(self): > self.a = 1 and t = T() and then you get >>> print t.a > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > AttributeError: 'NoneType' object has no attribute 'a' While T.a is 1. > So what the heck is 'T'? It seems that I can't instantiate it or > derive from it, so I guess it isn't a proper class. But it's > something; it has an attribute. What is it? I don't know. > How would it be used > (or, I guess, how should the __new__() method be used)? Any hints? The __new__ method should return the class. In your case return is None. Further the parametername for the __new__ method should be better cls to have a distinction to the usual self for instances. See http://www.python.org/doc/2.4.4/ref/customization.html Best wishes -- http://mail.python.org/mailman/listinfo/python-list