# Divide Function

def div(x,y):
    print "DummyCal: ", x, " / ", y 
    if y == 0 :
        print "Error: denominator can not be 0!!!\n"
        return "0"
    else:
        return x/y


# Divide Function

def div(x,y):
    print "DummyCal: ", x, " / ", y 
    if y == 0 :
        print "DummyCal: ZeroDivisionError, y cannot be 0"
        return None
    else:
        return x/y


Revert "Modify div.py file"