> Is it normal? Yes. The interpreter prints back the repr of a, which reflects the imprecision inherent in floats. If you want '1.1', use the string returned by the str function. >>> a = 1.1 >>> a 1.1000000000000001 >>> repr(a) '1.1000000000000001' >>> str(a) '1.1' Michael -- Michael D. Hartl, Ph.D. CTO, Quark Sports LLC http://quarksports.com/