[Python-Dev] Decimal <-> float comparisons in py3k. (original) (raw)
Greg Ewing greg.ewing at canterbury.ac.nz
Tue Mar 16 23:16:11 CET 2010
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Mark Dickinson wrote:
On Tue, Mar 16, 2010 at 3:58 PM, P.J. Eby <pje at telecommunity.com> wrote:
If not, it might be confusing if a number that prints as '.1' compares unequal to Decimal('.1'). Agreed, but this is just your everyday floating-point confusion, to be dealt with by social means (e.g., educating the programmer).
Seems to me that this education would mostly consist of saying "don't compare floats and decimals", which is why I think that disallowing them in the first place would be better.
Then if a programmer truly needs to compare them for some reason, he has to be explicit about how to do it.
-- Greg
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