为什么实际上值是整数时却出现Pandas Dataframe错误

Question

我收到“ ValueError：DataFrame的真值不明确。请使用a.empty，a.bool（），a.item（），a.any（）或a.all（）。”错误。我试图通过提供括号和花括号来修复它。但这并没有解决。

def RENKO_TRIMA(company_data):
    global ohlc_final_1min, RENKO_Final, final_position, order_quantity, RENKO, RENKO_temp
    try:
        if len(RENKO_Final) > 0:
            if RENKO_Final.iloc[-1, 6] != 0:
                if (RENKO_Final.iloc[-1, 3] == "SELL") & (RENKO_Final.iloc[-1, 1] < RENKO_Final.iloc[-1, 6]) & (RENKO_Final.iloc[-1, 2] < RENKO_Final.iloc[-1, 6]):
                    if (positions(company_data['instrument_token'])) > 0:
                        self.place_order(variety="regular", exchange=self.EXCHANGE_NSE, tradingsymbol="SBIN",
                                         transaction_type=self.TRANSACTION_TYPE_SELL,
                                         quantity=abs(positions(company_data['instrument_token'])),
                                         order_type=self.ORDER_TYPE_MARKET, product=self.PRODUCT_MIS)
                    if positions(company_data['instrument_token'])  == 0:
                        self.place_order(variety="regular", exchange=self.EXCHANGE_NSE, tradingsymbol="SBIN",
                                         transaction_type=self.TRANSACTION_TYPE_SELL,
                                         quantity=quantity(company_data['last_price']),
                                         order_type=self.ORDER_TYPE_MARKET, product=self.PRODUCT_MIS)
                    #RENKO[company_data['instrument_token']][4] = "SHORT"
                elif (RENKO_Final.iloc[-1, 3] == "BUY") & (RENKO_Final.iloc[-1, 1] > RENKO_Final.iloc[-1, 6]) & (RENKO_Final.iloc[-1, 2] > RENKO_Final.iloc[-1, 6]):
                    if (positions(company_data['instrument_token'])) < 0:
                        self.place_order(variety="regular", exchange=self.EXCHANGE_NSE, tradingsymbol="SBIN",
                                         transaction_type=self.TRANSACTION_TYPE_BUY,
                                         quantity=abs(positions(company_data['instrument_token'])),
                                         order_type=self.ORDER_TYPE_MARKET, product=self.PRODUCT_MIS)
                    if positions(company_data['instrument_token']) == 0:
                        self.place_order(variety="regular", exchange=self.EXCHANGE_NSE, tradingsymbol="SBIN",
                                         transaction_type=self.TRANSACTION_TYPE_BUY, quantity=quantity(company_data['last_price']),
                                         order_type=self.ORDER_TYPE_MARKET, product=self.PRODUCT_MIS)
                    #RENKO[company_data['instrument_token']][4] = "LONG"
    except Exception as e:
        traceback.print_exc()