docs: def display(self,*arg):
      """ For simple Demo
          測試用顯示樣式。
      """
      print self.stock_name,self.stock_no
      print '%s %s %s(%+.2f%%)' % (self.data_date[-1],self.raw_data[-1],self.stock_range[-1],self.range_per)
      for i in arg:
        print ' - MA%02s  %.2f %s(%s)' % (i,self.MA(i),self.MAC(i),self.MA_serial(i)[0])
      print ' - Volume: %s %s(%s)' % (self.MAVOL(1)/1000,self.MACVOL(1),self.MAVOL_serial(1)[0])
      MAO = self.MAO(3,6)
      print ' - MAO(3-6): %.2f %s(%s)' % (MAO[0][1][-1], MAO[1], MAO[0][0])
      print ' - RABC: %s' % self.RABC