class Div:

   def doDivision (self):
      inputOK = False
      while (inputOK == False):
         try:
            num = input ("Enter numerator: ")
            denom = input ("Enter denominator: ")
            quot = num / (denom * 1.0)
            inputOK = True
         except ZeroDivisionError:
            print "Denominator cannot be zero"

      print num, "divided by", denom, "equals", quot


def fun ():
   print "Just to contrast the call to a function vs. class method"


def main ():
   aDiv = Div ()
   fun ()
   aDiv.doDivision()

main ()