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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: from future import pass_function
Date: Thu, 26 Jul 2012 10:38:28 -0400
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On 7/26/2012 2:39 AM, Ulrich Eckhardt wrote:

> I have seen code that just created a list comprehension to iterate over
> something but was discarding the results.

If you mean, discard the resulting list, that is probably bad code as it 
should not create the list in the first place. A generator expression or 
for loop will iterate without creating an unneeded list.

 > That could be a case for a "do nothing" function.

Such code does do something within the comprehension.

> Just having a function that does nothing

Not possible. None is the default return. Python does not have 
proceedures, and that is not going to change, especially for a null 
proceedure.

-- 
Terry Jan Reedy