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Date: Thu, 13 Feb 2014 15:33:11 +1100
Subject: Re: singleton ... again
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:66153

On Thu, Feb 13, 2014 at 3:24 PM, Steven D'Aprano <steve@pearwood.info> wrote:
> Of course it can happen by accident. It's happened to me, where I've
> accidentally called NoneType() (which raises, rather than returning a new
> instance).

It does in 2.7, yes, but not in 3.4:

>>> type(None)() is None
True

Definitely prefer returning the singleton to raising.

ChrisA