@property
def closable_buy_quantity(self):
    '\n        [float] 可平买方向持仓\n        '
    return (self.buy_quantity - self.sell_close_order_quantity)
[float] 可平买方向持仓
@property
def closable_buy_quantity(self):
    '\n        \n        '
    return (self.buy_quantity - self.sell_close_order_quantity)