[Python-Dev] Decimal <-> float comparisons in py3k.

[Robert Kern]

On 2010-03-18 13:27 PM, Glenn Linderman wrote:

> As any non-naïve float user is aware, the proper form of float
> comparisons is not to use < or > or == or !=, but rather, instead of
> using < (to follow along with your example), one should use:
>
> Decimal('1.1') - 2.2 < epsilon

Not at all. This is quite incorrect for most use cases. Fuzzy comparisons are 
sometimes useful for equality testing, but almost never for ordering.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco