Short-circuit Logic

[Ahmed Abdulshafy]

On Tuesday, May 28, 2013 3:48:17 PM UTC+2, Steven D'Aprano wrote:
> On Mon, 27 May 2013 13:11:28 -0700, Ahmed Abdulshafy wrote:
> 
> 
> 
> > That may be true for integers, but for floats, testing for equality is
> 
> > not always precise
> 
> 
> 
> Incorrect. Testing for equality is always precise, and exact. The problem 
> 
> is not the *equality test*, but that you don't always have the number 
> 
> that you think you have. The problem lies elsewhere, not equality!
> 
> 
> Steven

Well, this is taken from my python shell>

>>> 0.33455857352426283 == 0.33455857352426282
True

Anyway, man, those were not my words anyway, most programming books I've read state so. Here's an excerpt from the Python book, I'm currently reading>

">>> 0.0, 5.4, -2.5, 8.9e-4
(0.0, 5.4000000000000004, -2.5, 0.00088999999999999995)


The inexactness is not a problem specific to Python—all programming languages have this problem with floating-point numbers."