code: def MACD(Series, FAST, SLOW, MID):
      
      EMAFAST = EMA(Series, FAST)
      EMASLOW = EMA(Series, SLOW)
      DIFF = EMAFAST - EMASLOW
      DEA = EMA(DIFF, MID)
      MACD = (DIFF - DEA) * 2
      DICT = {'DIFF': DIFF, 'DEA': DEA, 'MACD': MACD}
      VAR = pd.DataFrame(DICT)
      return VAR
docs: macd指标 仅适用于Series
      对于DATAFRAME的应用请使用QA_indicator_macd