How to 'declare' class attributes?

[Neil]

Don't get class attributes and instance attrabutes mixed up. when you
say:

class foo:
   val = 5

etc, you are saying that the class has a specific value. Inlike:

class foo:
   def __init__(self, i):
      self.val = i

where the instance of the object has a particular value.  Note that all
the instances can have a different value; determined when created.  but
if you say: foo.val = 50, then all the insantces of that class are
effected by that value.  I guess you could condier it a global for the
class, from the instance prespective. Or a static class variable, maybe.

>From your question it sounds like you are used to something more
structured, like java or c++.  Python is much more free form, which can
be hard to get used to, but ultimately leads to a much more pleasurable
coding experience.

Neil Macneale

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