On May 25, 8:58 pm, notnorweg... at yahoo.se wrote: > >>> x = 5 > >>> x /= 2 > >>> x > 2 > >>> x *=11.4 > >>> x > > 22.800000000000001 > > ok where does the 1 in the come from? Floating point arithmetic. Michael Foord http://www.ironpythoninaction.com/