Python交互式代理ibapi

我在使用修改后的IB示例代码为每个库存订单使用和增加orderId时遇到问题。我有一个方法在类中生成nextValidId并将其打印到stdout，但我不确定如何访问在主程序体中创建的已定义属性self.nextValidOrderId。如果手动输入orderId，我可以实例化EWrapper和EClient类并下订单。在示例代码中，我将其硬编码为126。我想我可以在我的主要程序中使用以下内容。 orderId=app.nextValidOrderId，但它不起作用

`__author__ = 'noone'

from Testbed.OrderSamples import OrderSamples
from ibapi.client import EClient
from ibapi.wrapper import EWrapper
from ibapi.common import *
from ibapi.contract import *

class OrderApp(EWrapper, EClient):
    def __init__(self):
        EClient.__init__(self,self)

    def error(self,reqId:TickerId, errorCode:int, errorString:str):
        print("Error:",reqId," ", errorCode, " ", errorString)

    # This is the initial response after connection to TS from the API providing next available OrderID
    @iswrapper        
    def nextValidId(self, orderId: int):
    super().nextValidId(orderId)

    print("setting nextValidOrderId: %d", orderId)
    self.nextValidOrderId = orderId

    def contractDetails(self, reqId:int, contractDetails:ContractDetails):
        print("contractDetails: ", reqId, " ", contractDetails)

def main():
    app=OrderApp()
    app.connect("127.0.0.1",7497,0)

    ## Build the contract object to be passed to the order Method

    stock_contract = Contract()
    stock_contract.symbol = 'AAPL'
    stock_contract.secType = 'STK'
    stock_contract.exchange = 'SMART'
    stock_contract.currency = 'USD'
    stock_contract.primaryExchange = 'NASDAQ'

    # reqID must be provided to the Order. This method gets the reqID from IB DB's
    app.reqContractDetails(10, stock_contract)

    try:
        # Now place the order in Paper Money Account
        app.placeOrder(126, stock_contract, OrderSamples.LimitOrder("BUY", 50, 12))

    except:
        raise

    app.run()

if __name__ == "__main__":
    main()`

---

您的方法在语法上不正确。它应该有如下缩进

@iswrapper        
def nextValidId(self, orderId: int):
    super().nextValidId(orderId)

    print("setting nextValidOrderId: %d", orderId)
    self.nextValidOrderId = orderId

另外，您没有导入函数decorator iswrapper

from ibapi.utils import iswrapper

希望这有帮助