@property
def daily_pnl(self):
    '\n        [float] 当日盈亏\n        '
    return (self.holding_pnl + self.realized_pnl)
[float] 当日盈亏
@property
def daily_pnl(self):
    '\n        \n        '
    return (self.holding_pnl + self.realized_pnl)