[Tutor] Inheriting from parent object

[Ed Singleton]

I want to create a property that will inherit it's value from the same
property in it's parent object, but will check it's parent's propety
everytime it is called.  But that can be over-ridden, and I don't have
to know what the objects parent is.

For example:

object.x = 3
object.subobject.x = inherit()
print object.subobject.x #prints 3
object.x = 4
print object.subobject.x #prints 4
object.subobject.x = 5
print object.subobject.x #prints 5

What could I put in the inherit() function that would look for the
same property of it's parent and return that, whilst keeping it as
general as possible?

Thanks

Ed