[Tutor] Class vs. Static Methods

Alan G alan.gauld at freenet.co.uk
Thu Jun 23 09:31:59 CEST 2005

> This is a neat trick. But can't this also be done with a static
> that accesses a static data attribute the same way?

I don't think so because the static mehod can only see
the attributes of Shape not of Line. It doesn't have
access to the cls value in Kent's code below...

> >>  @classmethod
> >>  def count(cls):
> >>    try:
> >>      cls._count += 1
> >>    except AttributeError:
> >>      cls._count = 1

So if it tried to incremet count every instance of every
kind of shape would increment the shape counter - which may
be what you want under some circumstances, but it wouldn't
know which of the subclasses was calling it so couldn't
access their counters.

I think thats right!?

Alan G.

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