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Date: Sun, 21 Dec 2014 18:46:46 +1100
Subject: Re: Hello World
From: Chris Angelico <rosuav@gmail.com>
Cc: "python-list@python.org" <python-list@python.org>
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Xref: csiph.com comp.lang.python:82714

On Sun, Dec 21, 2014 at 6:44 PM, CM <cmpython@gmail.com> wrote:
> Yes, just tested it on the same machine in the terminal and it prints:
>
> Hello, world!
> 13
>
> Not sure what the 13 is all about. Thanks.

Number of bytes output. It's the return value from the output call -
common with low-level APIs.

ChrisA