Converting a flat list to a list of tuples

[Fredrik Lundh]

Bengt Richter wrote:

> >Though it looks nice, it's an implementation dependant solution. What if
> >someone changes zip to fetch the second item first?
>
> That would be a counter-intuitive thing to do. Most things go left->right
> in order as the default assumption.

it's not only the order that matters, but also the number of items
read from the source iterators on each iteration.

</F>