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Date: Fri, 27 May 2011 02:04:00 +1000
Subject: Re: Puzzled by list-appending behavior
From: Chris Angelico <rosuav@gmail.com>
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On Fri, May 27, 2011 at 1:58 AM, MRAB <python@mrabarnett.plus.com> wrote:
> I'd just like to point out that it's a convention, not a rigid rule.
> Sometimes it's not followed, for example, dict.setdefault.

dict.setdefault is more like dict.get but it also stores the result.
It's probably more a name issue than a protocol issue.

Chris Angelico