Python:E1136:Value'self.exchange.get\u组合'是取消订阅'

Question

def get_portfolio(self):
        contracts = settings.CONTRACTS
        portfolio = {}
        for symbol in contracts:
            position = self.bitmex.position(symbol=symbol)
            instrument = self.bitmex.instrument(symbol=symbol)

        if instrument['isQuanto']:
            future_type = "Quanto"
        elif instrument['isInverse']:
            future_type = "Inverse"
        elif not instrument['isQuanto'] and not instrument['isInverse']:
            future_type = "Linear"
        else:
            raise NotImplementedError("Unknown future type; not quanto or inverse: %s" % instrument['symbol'])

        if instrument['underlyingToSettleMultiplier'] is None:
            multiplier = float(instrument['multiplier']) / float(instrument['quoteToSettleMultiplier'])
        else:
            multiplier = float(instrument['multiplier']) / float(instrument['underlyingToSettleMultiplier'])

        portfolio[symbol] = {
            "currentQty": float(position['currentQty']),
            "futureType": future_type,
            "multiplier": multiplier,
            "markPrice": float(instrument['markPrice']),
            "spot": float(instrument['indicativeSettlePrice'])
        }

    return portfolio



qty = self.exchange.get_portfolio['currentQty']()

当我调用get\u portfolio函数时，是否有人知道我做错了什么，因为我一直收到以下错误消息：

E1136:Value 'self.exchange.get_portfolio' is unsubscriptable

Answer 1

您应该按照以下步骤进行：

qty = self.exchange.get_portfolio()
qty = qty[qty.keys()[0]]['currentQty']

或在一行中：

qty = self.exchange.get_portfolio()[self.exchange.get_portfolio().keys()[0]]['currentQty']

Answer 2

你在电话里犯了个小错误：

self.exchange.get_portfolio是一个函数，因此首先必须调用它，然后才能引用返回的dict中的条目

哦，我刚刚看到，你还必须在前面插入你的symbol：

qty = self.exchange.get_portfolio()[<YOUR_SYMBOL>]['currentQty']

如果您不知道符号，可以使用keys函数列出dict的所有键：

port = self.exchange.get_portfolio()
port_keys = port.keys()
qty = port[port_keys[<SOME KEY NUMBER>]]['currentQty']