来自 talib python 库的 MFI 指标没有 return 任何值

Question

def on_message(ws, message):
    global in_position
    global closes
    json_message = json.loads(message)

    candle = json_message['k']
    is_candle_closed = candle['x']
    close = candle['c']
    high = candle['h']
    low = candle['l']
    volume = candle['V']

    if is_candle_closed:
        print("Candle closed at {}".format(close))
        highs.append(float(high))
        lows.append(float(low))
        closes.append(float(close))
        volumes.append(float(volume))
        print(':')

        if len(closes) > MFI_PERIOD:
            np_closes = numpy.array(closes)
            mfi = talib.MFI(highs, lows, np_closes, volumes, MFI_PERIOD)
            last_mfi = mfi[-1]
            print('The current (MIDPOINT) is {}'.format(last_mfi))

-im using binance websocket stream to get kline data -im 试图从 MFI（资金流量指数）获取数据或值以实现某些交易的自动化 +我尝试了其他指标，例如 RSI 并且有效

但我不t know why this one isnt

Answer 1

这是一个简单的解决方案，您必须将值转换为 numpy 数字才能用作 talib.MFI

的参数

...

 if len(closes) > MFI_PERIOD:
        np_closes = numpy.array(closes)
        np_highs = numpy.array(highs)
        np_lows = numpy.array(lows)
        np_volumes = numpy.array(volumes)
        mfi = talib.MFI(np_highs, np_lows, np_closes, np_volumes, MFI_PERIOD)
        last_mfi = mfi[-1]
        print('The current (MIDPOINT) is {}'.format(last_mfi))

我正在做同一个项目，它对我有用。

来自 talib python 库的 MFI 指标没有 return 任何值

MFI indicator from talib python library doesn`t return any value

python

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