Mike Meyer <[EMAIL PROTECTED]> wrote: > Noam Raphael <[EMAIL PROTECTED]> writes: > > > The answer is that a subclass is guaranteed to have the same > > *interface* as the base class. And that's what matters. > > This is false. For instance: > > class A(object): > def method(self, a): > print a > > class B(A): > def method(self, a, b): > print a, b > > B implements a different interface than A. Statically typed OO > languages either use multi-methods or disallow changing the signature > of an overridden method. > > A tool to detect such cases would probably be almost as useful as the > tool you've proposed.
Agreed, and besides, the two tools can usefully be one. Look at the inspect module for signature checking helpers... Alex -- http://mail.python.org/mailman/listinfo/python-list
