[Tutor] references to containing objects

[Kent Johnson]

On Mon, Jun 23, 2008 at 12:17 AM, John Gunderman
<meanburrito920 at yahoo.com> wrote:
> I am looking for a way to tell a object the properties of its containing
> object.
> For example, I have an object foo, of class Bar, which I have stored in a
> dict
> in the object I want to access. Basically:
>
> container_object.contained_object["foo"].action()
>
> What I want is for the object "foo" to be able to access properties of
> container_object
> through its action() method.

Maybe the actions can be bound methods of the container object class?
For example:

class Container(object):
    def __init__(self):
        self.actions = {}
        self.actions['foo'] = self.foo
        self.value = 3

    def foo(self):
        print 'foo', self.value

c = Container()
c.actions['foo']()

Otherwise I would go with Alan's suggestion of passing the parent to
the action class constructor.

Kent