[Tutor] Money matters

[Brian van den Broek]

Terry said unto the world upon 06/28/2007 02:55 PM:
> I am going to need to be handling money calculations and was wondering
> about the float problem 
> in my calculations.
> 
> Should I simply run the results of all calculations through something
> like this:
> 
> from __future__ import division
> ...
> ...
> s=(int(round(s, 2)*100))/100
> 
> Or should I be using Decimal on all money calculations?
> 
> Or, is there another more preferred approach?


Hi Terry,

I'd say definitely use Decimal. Money calculations were a primary use 
case for the Decimal module. (Though a bit more needs to be done to 
get the right decimal precision. See 
<http://www.python.org/dev/peps/pep-0327/>.)

Best,

Brian vdB