A class subclass of itself. Why mutual subclassing is forbidden?

Question

Complex question I assume, but studying OWL opened a new perspective to live, the universe and everything. I\'m going philosophical here.

I am trying to achieve a cl

Answer 1

The MRO scheme implemented in Python (as of 2.3) forbids cyclic subclassing. Valid MRO's are guaranteed to satisfy "local precedence" and "monotonicity". Cyclic subclassing would break monotonicity.

This issue is discussed in the section entitled "Bad Method Resolution Orders"