On Nov 16, 11:35 am, Donn Ingle <[EMAIL PROTECTED]> wrote: > >This may help (on an old Python version): > >>>> class Sam: pass > >>>> class Judy: > > ... def foo(self): pass > > ... > >>>> children = [Sam(), Judy(), Sam()] > >>>> for child in children: hasattr(child, "foo") > > ... > > False > > True > > False > > That's not what my tests are showing. While Sam has no foo, it's coming from > (in my OP) Child (which is the parent class), so hasattr(Sam(),"foo") is > returning True. > > /d
But also in your OP: "I want to run the foo() method for each one that *has* a foo() method ...." So hasattr(child, "foo") really does answer the question as posed, even if it's not really what you want. I am curious as to why you want to go through such contortions. What do you gain. What happens, for example, if a subclass of Judy is passed in that does not override foo? Should foo be called in that case or not? --Nathan Davis -- http://mail.python.org/mailman/listinfo/python-list
