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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def oop(aa):
 """ For cmd output. """

  return ('%s %s %s %.2f %+.2f %s %s %s %s %+.2f %s %s %.2f %.4f %.4f' % (aa.stock_no, aa.stock_name, aa.data_date[-1], aa.raw_data[-1], aa.range_per, aa.MAC(3), aa.MAC(6), aa.MAC(18), aa.MAO(3,6)[1], aa.MAO(3,6)[0][1][-1], aa.MAO(3,6)[0][0], aa.RABC, aa.stock_vol[-1]/1000, aa.SD, aa.CV)).encode('utf-8')