attributes -- countries.us.Colorado... -- and the __get/set/delattr__
methods.
If I do that, the attributes (that was a stupid name for me to choose)
and children would have to not share any names with each other, with
the object's regular attrs, or python keywords.
I toyed with the idea of having __div__ create a descriptor, assign it
to a temporary attr, and access that. But then I realized that the
children should never be directly assigned to anyways. I can live with
one set of brackets at the end of the expression.
__methods__ are delightfully evil :-)
