Em Dom, 2006-03-19 às 08:54 -0800, Scott David Daniels escreveu: > class A(object): > def __new__(class_, *args, **kwargs): > if class_ is A: > if want_a_B1(*args, **kwargs): > return B1(*args, **kwargs) > elif want_a_B2(*args, **kwargs): > return B2(*args, **kwargs) > return object.__new__(class_) # Use *a,... except for object > > class B1(A): > def __new__(class_, *args, **kwargs): > if class_ is B1: > if want_a_B1(*args, **kwargs): > return B1(*args, **kwargs) > elif want_a_B2(*args, **kwargs): > return B2(*args, **kwargs) > return super(B1, class_).__new__(class_, *args, **kwargs)
Why you have that if on B1.__new__? B1 will be created only by A.__new__, which already did a check. -- Felipe. -- http://mail.python.org/mailman/listinfo/python-list
