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Date: Sat, 25 Jan 2014 17:43:58 +1100
Subject: Re: should I transfer 'iterators' between functions?
From: Chris Angelico <rosuav@gmail.com>
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On Sat, Jan 25, 2014 at 5:37 PM,  <seaspeak@gmail.com> wrote:
> take the following as an example, which could work well.
> But my concern is, will list 'l' be deconstructed after function return? and then iterator point to nowhere?
>
> def test():
>     l = [1, 2, 3, 4, 5, 6, 7, 8]
>     return iter(l)
> def main():
>     for i in test():
>         print(i)

Perfectly safe. Python guarantees that nothing can ever point to
"nowhere"; everything that might be looking for something else will
hold a reference to it, so the thing referred to will hang around.

ChrisA