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Date: Sun, 7 Aug 2011 02:05:14 +0100
Subject: Re: how to separate a list into two lists?
From: Chris Angelico <rosuav@gmail.com>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:10996

On Sun, Aug 7, 2011 at 1:58 AM, Tim Roberts <timr@probo.com> wrote:
> I did momentarily consider the following slimy solution:
> =A0L1 =3D dict(L).keys()
> =A0L2 =3D dict(L).values()
> but that reorders the tuples. =A0They still correspond, but in a differen=
t
> order.
>

Which can be overcome with collections.OrderedDict. But what's dict(L)
going to do? It's going to loop over L, more than once in fact.

I guess the real question is: Why do you wish to avoid a loop?

ChrisA