@property
def holding_pnl(self):
    '\n        [float] 当日持仓盈亏\n        '
    return (self.buy_holding_pnl + self.sell_holding_pnl)
[float] 当日持仓盈亏
@property
def holding_pnl(self):
    '\n        \n        '
    return (self.buy_holding_pnl + self.sell_holding_pnl)