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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']()

Does anybody know what I am doing wrong when I am calling the get_portfolio function because I keep getting this error message:

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

You have a little mistake in the call:

self.exchange.get_portfolio is a function, so you first have to call it and then you can reference the entries from the returned dict.

Oh I just saw, that you also have to insert your symbol before:

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

If you don't know the symbols, you can use the keys function which lists all the keys of your dict:

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

You should do it as follows:

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

or in a single row:

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