Pythonification of the asterisk-based collection packing/unpacking syntax

[Steven D'Aprano]

On Sat, 24 Dec 2011 06:47:21 -0800, Eelco wrote:

> I would like to be able to write something like:
> 
> a, middle::tuple, b = ::sequence
> 
> Where I would like the extra :: before the sequence to explicitly signal
> collection unpacking on the rhs, to maintain the symmetry with
> collection unpacking within a function call.

The :: on the right-hand side is redundant, because the left-hand side 
already explicitly signals collection unpacking of the RHS. Requiring :: 
on the RHS above is as unnecessary as it would be here:

    n = len(::sequence)



-- 
Steven