[Configobj-develop] Can I get a value through the interpolation path?

[Jason B. <jb...@ze...>]

I'm not really sure how best to phrase my example, so I'll illustrate it
with code.  :-)

Suppose I have the following config file:

[section]
foo='bar'
    [[subsection]]

Now suppose I do the following:

configobj = <get configobj somehow>
subsection = configobj['section']['subsection']
subsection['foo']

This throws a key error, which is most likely the expected behavior as foo
isn't a key on subsection.  However, I would like to have a way to get the
value of foo as if subsection were like this:

[[subsection]]
foo = '$foo'

That way I can fetch the value through the interpolation path rather than
only checking the current section.  I suppose I could do something like
this:

try:
    return subsection['foo']
except KeyError, ke:
    subsection['foo'] = '$foo'
    return subsection['foo']

But that feels a bit hacky.  Are there any better ways to do this that I'm
not thinking of, or am I just going to have to buck up and put the hack in?