开云体育

def updatePortfolio(self,
        contract: Contract,
        position: float,
        marketPrice: float,
        marketValue: float,
        averageCost: float,
        unrealizedPNL: float,
        realizedPNL: float,
        accountName: str):
    position_dict = {'symbol' : contract.symbol,
                     'position': position,
                     'value': marketValue}
    if contract.conId in self.positions.index:
        self.positions.loc[contract.conId] = pd.series(position_dict)
    else:
        self.positions = self.positions.append(
            pd.DataFrame(positions_dict, index=[contract.conId]))

    self.positions.to_csv('positions.csv')