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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Fri, 5 Oct 2012 14:10:36 -0600
Subject: Re: sum function
To: Python <python-list@python.org>
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Xref: csiph.com comp.lang.python:30837

On Fri, Oct 5, 2012 at 2:03 PM, Mike <mike20007@gmail.com> wrote:
> I added the print command.
>
> It prints [] when there is no data.

Change "iter(next_r, None)" to "iter(next_r, [])"