[Python-3000] PEP 3132: Extended Iterable Unpacking

[Greg Ewing]

Simon Percivall wrote:

> This was more in the way of returning the type that was given:
> if you start with a list you end up with a list in "b", if you
> start with an iterator you end up with an iterator.

I don't think that returning the type given is a goal
that should be attempted, because it can only ever work
for a fixed set of known types. Given an arbitrary
sequence type, there is no way of knowing how to
create a new instance of it with specified contents.

--
Greg