[Tutor] garbage collection/class question

[Jan Riechers]

On 10.01.2013 19:50, Mitya Sirenef wrote:
> On 01/10/2013 09:06 AM, richard kappler wrote:
>
> class Tree(object):
>      height = 0
>
>      def grow(self):
>          self.height += 1
>
> You may have a dozen of related functions and you can logically group
> them together by making them methods of a class, making it easier to
> think about and work on the logic of your program.
>
>
>

Actually one question about those "dozens of related" instances 
generated by:
greenwoodTree = Tree()
oakTree = Tree()
....

Both, greenwoodTree and oakTree, are derived from Tree class, thus 
receiving the features and also - if so - holding unique values created 
in there __init__ generator method - "self.height", "self.color" and so 
forth uniquely each.

But do both share the same function memory space from the class "Tree"?

I am currently trying also to get my head wrapped around OOP in general, 
but not 100% sure so that derived instances use the same functions (also 
memory wise speaking) - or are there several definitions of "grow" ?

The confusion came somehow when reading about "classmethods" and 
"staticmethods" and patterns like Singleton, monostate, borg...
from which I understand only ensure that the "self.height" properties 
are shared across multiple instances of a given class?

 From what I tried out using id() and generating functions in a loop - 
the "id(class.function) provided the same result when printed out, 
according to that:
http://stackoverflow.com/questions/121396/accessing-object-memory-address

So I assume the functions are shared across thus one decleration has 
been made in "Tree" class and all siblings are using that one?

Thank you in advance for clarification.

Jan