Tuple assignment

[Walter Bright]

Russel Winder wrote:
> Python may be the best base to compare things to as tuple assignment has
> been in there for years.
> 
> Pythons choice is not a car/cdr approach but an exact match approach.
> so if t represents a tuple datum or a function returning a tuple:
> 
>         x = t
> 
> then x is a tuple -- remembering that variables are all just references
> to objects implemented via keys in a dictionary, and:
> 
>         a , b , c = t
> or
>         ( a , b , c ) = t
> 
> is tuple assignment where now t is required to be a tuple of length 3.
> cf.

The first thought was to make it an exact match approach. Andrei thought that 
the car/cdr one was better, though, and I find it intuitively appealing, too. 
Perhaps Python missed an important use case?

Or perhaps the ambiguity as to whether the last item gets to be a value or 
another tuple is too much.