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To: python-list@python.org
From: Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject: Re: PyWart: The problem with "print"
Date: Mon, 03 Jun 2013 09:49:40 +0100
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On 03/06/2013 04:10, Dan Sommers wrote:
> On Sun, 02 Jun 2013 20:16:21 -0400, Jason Swails wrote:
>
>> ... If you don't believe me, you've never hit a bug that 'magically'
>> disappears when you add a debugging print statement ;-).
>
> Ah, yes.  The Heisenbug.  ;-)
>
> We used to run into those back in the days of C and assembly language.
> They're much harder to see in the wild with Python.
>

Strikes me it's a bit like problems when prototyping circuit boards. 
The card doesn't work, so you mount it on an extender card, problem goes 
away, remove extender card, problem reappears.  Wash, rinse, repeat :)

-- 
"Steve is going for the pink ball - and for those of you who are 
watching in black and white, the pink is next to the green." Snooker 
commentator 'Whispering' Ted Lowe.

Mark Lawrence