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Date: Sun, 30 Mar 2014 10:17:49 +1100
Subject: Re: checking if two things do not equal None
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:69355

On Sun, Mar 30, 2014 at 9:46 AM, Tim Chase <tim@thechases.com> wrote:
> Though am I correct that your iteration tests for equality, while
> mine tests for identity?  Also, my version bails early in the event
> quitting early is possible.  That's particularly useful in the case
> of doing something like
>
>   if all(x() is None for x in [func1, func2, func3, costly_func]):
>     do_something()

Presumably you mean to actually call those functions, as checking the
identity of a costly function is still cheap :)

ChrisA