Michael H.Goldwasser wrote: > After using "import math" you will need to use the qualified name > math.sqrt(blah) to call the square root function. That explains the > NameError when trying to use the unqualified name, sqrt. > > As to your first message, the ValueError that you are reporting with > the usage math.sqrt is likely due to an attempt to take the square > root of a negative number (presumably because your (ypos - 384 * 160) > factor is negative.
Thanks Michael and Ziyad, it seems I just had my brackets in the wrong place leading to trying to square root a number less than 0. Matt _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
