重写了下单函数，buy,sell,short,cover 下单失败自动重撤单，大家看看有没有错误，回测时没有问题！

重写函数用法就很简单了，id=buy(价格,数量) 一句话就可以下单了，并返回id,适合懒人，并实现不成功自动撤单 实际上价格也是无效的，自动获取最新价+5跳 哈哈，这个是为了实盘避免撤单模拟对价成交

def buy(price, volume):
    global order_list, quote, deadline
    order = api.insert_order(symbol=SYMBOL, direction="BUY", offset="OPEN", limit_price=quote.ask_price1 + 5,
                             volume=volume)
    while True:
        api.wait_update(deadline=deadline)

        if api.is_changing(order, "status"):
            print(order.status == "FINISHED", order.status != "FINISHED")

            if order.status == "FINISHED":

                return order.order_id
                break

            else:
                print('已撤单')
                api.cancel_order(order.order_id)

def sell(price, volume):
    global order_list, deadline
    order = api.insert_order(symbol=SYMBOL, direction="SELL", offset="CLOSE",
                             limit_price=quote.bid_price1 - 5,
                             volume=volume)
    while True:
        api.wait_update(deadline=deadline)

        if api.is_changing(order, "status"):

            print(order.status == "FINISHED", order.status != "FINISHED")

            if order.status == "FINISHED":

                return order.order_id
                break

            else:
                print('已撤单')
                api.cancel_order(order.order_id)

def short(price, volume):
    global order_list, quote, deadline
    order = api.insert_order(symbol=SYMBOL, direction="SELL", offset="OPEN", limit_price=quote.bid_price1 - 5,
                             volume=volume)
    while True:
        api.wait_update(deadline=deadline)

        if api.is_changing(order, "status"):

            print(order.status == "FINISHED", order.status != "FINISHED")

            if order.status == "FINISHED":

                return order.order_id
                break

            else:
                print('已撤单')
                api.cancel_order(order.order_id)

def cover(price, volume):
    global order_list, deadline
    order = api.insert_order(symbol=SYMBOL, direction="BUY", offset="CLOSE",
                             limit_price=quote.ask_price1 + 5,
                             volume=volume)
    while True:
        api.wait_update(deadline=deadline)

        if api.is_changing(order, "status"):

            print(order.status == "FINISHED", order.status != "FINISHED")

            if order.status == "FINISHED":

                return order.order_id
                break

            else:
                print('已撤单')
                api.cancel_order(order.order_id)