@property
def sell_holding_pnl(self):
    '\n        [float] 卖方向当日持仓盈亏\n        '
    return (((self.sell_avg_holding_price - self.last_price) * self.sell_quantity) * self.contract_multiplier)
[float] 卖方向当日持仓盈亏
@property
def sell_holding_pnl(self):
    '\n        \n        '
    return (((self.sell_avg_holding_price - self.last_price) * self.sell_quantity) * self.contract_multiplier)