(self, first, last)
Set the fractional values of the slider position (upper and
        lower ends as value between 0 and 1).
Set the fractional values of the slider position (upper and
        lower ends as value between 0 and 1).
Set the fractional values of the slider position ( upper and lower ends as value between 0 and 1 ) .
def set(self, first, last):
        """Set the fractional values of the slider position (upper and
        lower ends as value between 0 and 1)."""
        self.tk.call(self._w, 'set', first, last)
def set ( self , first , last ) : self . tk . call ( self . _w , 'set' , first , last )