@property
def buy_open_order_quantity(self):
    '\n        [int] 买方向挂单量\n        '
    return sum((order.unfilled_quantity for order in self.open_orders if ((order.side == SIDE.BUY) and (order.position_effect == POSITION_EFFECT.OPEN))))
[int] 买方向挂单量
@property
def buy_open_order_quantity(self):
    '\n        \n        '
    return sum((order.unfilled_quantity for order in self.open_orders if ((order.side == SIDE.BUY) and (order.position_effect == POSITION_EFFECT.OPEN))))