On Fri, Feb 19, 2010 at 12:37 PM, Kenneth Gonsalves <law...@au-kbc.org> wrote: > hi > >>>> round(2.1667000000000001,3) > 2.1669999999999998 > > what gives? > [snip]
You are running into the problems of floating point number representation. This has nothing to do with round() >>> x = 2.17 >>> x 2.1699999999999999 >>> The number displayed is the best representation given the binary representation's limits of storage etc., Some languages (Ruby comes to mind) display 'better' looking results and IIRC Python 3 will also do the same. $ irb >> x = 2.17 => 2.17 >> x => 2.17 >> If you are looking at displaying, consider doing sth. like >>> print "%5.3f" %(round(2.16670000001, 3)) 2.167 HTH -- Asokan Pichai *-------------------* We will find a way. Or, make one. (Hannibal) _______________________________________________ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
