Python Macros

[Arich Chanachai]

<SNIP>

>>In ObjC it would be send the message y with value z to object X
>>Say X doesn't know what to do with y
>>specified in X's code are instruction that tell it what object to pass
>>the message y to...say...U for example
>>
>>So the message has been passed and basically translates into U.y(z) or
>>in ObjC [U y:z]
>>    
>>
>
>You mean some refinement of this sort of thing:
>
>    class X(object):
>    
>        a = "lives in X"
>    
>        def __getattr__(self, name):
>            return getattr(U,name)
>    
>    class U(object):
>    
>        b = "lives in Y"
>    
>    x = X()
>    print x.a
>    print x.b
>
>?
>  
>
Sure, but what if I dynamically (at runtime) extend X to include 
variable b.  Will it then print X.b or still U.b?