On 04/02/10 13:01, Patrick Maupin wrote: > On Apr 1, 7:49 pm, Tim Chase <python.l...@tim.thechases.com> wrote: >> David Robinow wrote: >>> $ python -c "print 1/2 * 1/2" >>> 0 >> >>> But that's not what I learned in grade school. >>> (Maybe I should upgrade to 3.1?) >> >> That's because you need to promote one of them to a float so you >> get a floating-point result: >> >> >>> 1/2 * 1/2 >> 0 >> >>> 1/2 * 1/2.0 >> 0.0 >> >> Oh...wait ;-) >> >> -tkc > > Hmmm, I think I'm starting to see why we need math.fsum() to take care > of those rounding errors...
hmm? >>> import math >>> math.fsum([1/2, 1/2]) 0.0 it doesn't appear to take care of those rounding errors, not in this case at least. -- http://mail.python.org/mailman/listinfo/python-list
