On May 25, 12:31 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > This is how I implemented; I guess there must be elegant way to do > this... > > def find_closest_relative(a,b,c): > c1 = b.__class__ > c2 = b.__class__ > > while True: > if isinstance(a, c1): > return b > if isinstance(a, c2): > return c > c1 = c1.__base__ > c2 = c1.__base__ > > - > Suresh
I can't see how your code does what you describe. > Now, given one of the instance, I want to find the > closest relative of the other two. What influence would an object have over the closest relative of two other objects? The closet relative of two other objects is independent of any third object. Do you want to find the closest relative of 3 objects? If so, this might work: import inspect class A(object): pass class X(object): pass class B(A, X): pass #an object of this class has A as a base class class C(A, X): pass class D(A, X): pass class E(C): pass #an object of this class has A as a base class class F(D): pass #an object of this class has A as a base class def closestRelative(x, y, z): b1 = inspect.getmro(x.__class__) b2 = inspect.getmro(y.__class__) b3 = inspect.getmro(z.__class__) for elmt in b1: if elmt in b2 and elmt in b3: return elmt return None b = B() e = E() f = F() print closestRelative(b, e, f) However, you should probably post an example of a class structure and describe what you want to happen when you have three instance of the various classes. -- http://mail.python.org/mailman/listinfo/python-list