OOP: method overriding works in mysterious ways?

[John M. Gabriele]

André wrote:
> John M. Gabriele wrote:
> 
> Since Child has no advice() method, it inherits the one for Parent.
> Thus, Child can be thought of as being defined as follows:
> 
> . class Child( Parent ):
> .
> .      def speak( self ):
> .          print '\t\tChild.speak()'
> .          self.advise()
> .
> .      def advise( self ):   # inherited from Parent
> .          print '\tParent.advise()'
> .          self.critique()
> .
> .      def critique( self ):
> .          print '\t\tChild.critique()'
> .

That's a very interesting way to look at it... But I thought
that the Python interpreter takes care of walking up the
inheritance tree looking for the instance methods, rather
than what you've written above...

> Note that "self" refer to the *instance* created, not the *class*.

Thanks. Right -- the self object always refers to the object that
you originally used to call the instance method (here, speak()).

> 
> Now, does the output make sense?
> 
> André
> 

Bearing in mind what self is referring to, then yes,
the output does make sense. Thanks. :)

---J

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