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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Sun, 21 Oct 2012 13:06:11 -0600
Subject: Re: get each pair from a string.
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Xref: csiph.com comp.lang.python:31857

On Sun, Oct 21, 2012 at 12:58 PM, Vincent Davis
<vincent@vincentdavis.net> wrote:
> x = 'apple'
> for f in range(len(x)-1):
>     print(x[f:f+2])
>
> @Ian,
> Thanks for that I was just looking in to that. I wonder which is faster I
> have a large set of strings to process. I'll try some timings if I get a
> chance later today.

The solution you came up with is probably faster, but less general --
it will only work on sliceable sequences like strings, not arbitrary
iterables.