由于记录错误，无法连接到Interactive Brokers Api

问题描述

因此，我正在使用python交互式经纪人api，并且尝试通过交互式经纪人下达限价订单。我的代码是：

from ibapi.client import EClient
from ibapi.wrapper import EWrapper
from ibapi.contract import Contract
from ibapi.order import Order
import threading
import time


class TradingApp(EWrapper,EClient,Contract,Order):
    def __init__(self):
        EClient.__init__(self,self)
 
    def nextValidOrderId(self,orderId):
        super().nextValidId(orderId)
        self.nextValidOrderId = orderId
        print("NextValidId:",orderId)

def websocket_con():
    app.run()
    
        
app = TradingApp()
app.connect("127.0.0.1",7497,clientId=1)

con_thread = threading.Thread(target=websocket_con,daemon=True)
con_thread.start()
time.sleep(1)

contract=Contract()
contract.symbol = 'AMD'
contract.secType = 'STK'
contract.currency = 'USD'
contract.exchange = 'SMART'

order=Order()
order.action = 'BUY'
order.orderType = 'LMT'
order.totalQuantity = 1
order.lmtPrice = 10

app.placeOrder(app.nextValidOrderId,contract,order)
time.sleep(5) 
@H_502_5@
此代码应能够连接到已建立的纸质交易帐户。虽然我正在接受错误：
--- Logging error ---
Traceback (most recent call last):
  File "C:\Users\B1880\Anaconda3\lib\logging\__init__.py",line 1025,in emit
    msg = self.format(record)
  File "C:\Users\B1880\Anaconda3\lib\logging\__init__.py",line 869,in format
    return fmt.format(record)
  File "C:\Users\B1880\Anaconda3\lib\logging\__init__.py",line 608,in format
    record.message = record.getMessage()
  File "C:\Users\B1880\Anaconda3\lib\logging\__init__.py",line 369,in getMessage
    msg = msg % self.args
  File "C:\Users\B1880\AppData\Roaming\Python\python37\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\object_implem.py",line 12,in __repr__
    return str(id(self)) + ": " + self.__str__()
  File "C:\Users\B1880\AppData\Roaming\Python\python37\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\contract.py",line 85,in __str__
    str(self.conId),AttributeError: 'TradingApp' object has no attribute 'conId'
Call stack:
  File "C:\Users\B1880\Anaconda3\lib\runpy.py",line 193,in _run_module_as_main
    "__main__",mod_spec)
  File "C:\Users\B1880\Anaconda3\lib\runpy.py",in _run_code
    exec(code,run_globals)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\ipykernel_launcher.py",line 16,in <module>
    app.launch_new_instance()
  File "C:\Users\B1880\Anaconda3\lib\site-packages\traitlets\config\application.py",line 664,in launch_instance
    app.start()
  File "C:\Users\B1880\Anaconda3\lib\site-packages\ipykernel\kernelapp.py",line 583,in start
    self.io_loop.start()
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\platform\asyncio.py",line 153,in start
    self.asyncio_loop.run_forever()
  File "C:\Users\B1880\Anaconda3\lib\asyncio\base_events.py",line 538,in run_forever
    self._run_once()
  File "C:\Users\B1880\Anaconda3\lib\asyncio\base_events.py",line 1782,in _run_once
    handle._run()
  File "C:\Users\B1880\Anaconda3\lib\asyncio\events.py",line 88,in _run
    self._context.run(self._callback,*self._args)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\ioloop.py",line 690,in <lambda>
    lambda f: self._run_callback(functools.partial(callback,future))
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\ioloop.py",line 743,in _run_callback
    ret = callback()
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\gen.py",line 787,in inner
    self.run()
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\gen.py",line 748,in run
    yielded = self.gen.send(value)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\ipykernel\kernelbase.py",line 365,in process_one
    yield gen.maybe_future(dispatch(*args))
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\gen.py",line 209,in wrapper
    yielded = next(result)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\ipykernel\kernelbase.py",line 268,in dispatch_shell
    yield gen.maybe_future(handler(stream,idents,msg))
  File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\gen.py",line 545,in execute_request
    user_expressions,allow_stdin,File "C:\Users\B1880\Anaconda3\lib\site-packages\tornado\gen.py",in wrapper
    yielded = next(result)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\ipykernel\ipkernel.py",line 300,in do_execute
    res = shell.run_cell(code,store_history=store_history,silent=silent)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\ipykernel\zmqshell.py",line 536,in run_cell
    return super(ZMQInteractiveShell,self).run_cell(*args,**kwargs)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py",line 2858,in run_cell
    raw_cell,store_history,silent,shell_futures)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py",line 2886,in _run_cell
    return runner(coro)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\IPython\core\async_helpers.py",line 68,in _pseudo_sync_runner
    coro.send(None)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py",line 3063,in run_cell_async
    interactivity=interactivity,compiler=compiler,result=result)
  File "C:\Users\B1880\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py",line 3254,in run_ast_nodes
    if (await self.run_code(code,result,async_=asy)):
  File "C:\Users\B1880\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py",line 3331,in run_code
    exec(code_obj,self.user_global_ns,self.user_ns)
  File "<ipython-input-18-5f801bdffa6c>",line 41,in <module>
    app.placeOrder(app.nextValidOrderId,order)
  File "C:\Users\B1880\AppData\Roaming\Python\python37\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\client.py",line 847,in placeOrder
    self.wrapper.error(orderId,NOT_CONNECTED.code(),NOT_CONNECTED.msg())
  File "C:\Users\B1880\AppData\Roaming\Python\python37\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\wrapper.py",line 56,in error
    logger.error("ERROR %s %s %s",reqId,errorCode,errorString)
Unable to print the message and arguments - possible formatting error.
Use the traceback above to help find the error.
​
@H_502_5@
我确保已选中“启用活动客户端”和“套接字客户端”，并且信任IP地址为127.0.0.1
为什么会收到此日志记录错误？
 编辑：
新的代码是：
from ibapi.client import EClient
from ibapi.wrapper import EWrapper
from ibapi.contract import Contract
from ibapi.order import Order
import threading
import time


class TradingApp(EWrapper,EClient):
    def __init__(self):
        EClient.__init__(self,self)
 
    def nextValidId(self,orderId):
        self.nextValidId = orderId

def websocket_con():
    app.run()
    
        
app = TradingApp()
app.connect("127.0.0.1",daemon=True)
con_thread.start()
time.sleep(1)

contract=Contract()
contract.symbol = 'AMD'
contract.secType = 'STK'
contract.currency = 'USD'
contract.exchange = 'SMART'

order=Order()
order.action = 'BUY'
order.orderType = 'LMT'
order.totalQuantity = 1
order.lmtPrice = 10

app.placeOrder(app.nextValidId,order)
time.sleep(5) 
@H_502_5@
尽管现在我得到了错误：
ERROR <bound method TradingApp.nextValidId of <__main__.TradingApp object at 0x00000136780E7508>> 504 Not connected
@H_502_5@


解决方法
我认为class TradingApp(EWrapper,EClient):是您想要做的。我认为没有理由扩展Contract and Order类。
您更改了方法的名称，它必须与超类相同。
不要将方法名称重新用作变量名称。
#def nextValidOrderId(self,orderId):
def nextValidId(self,orderId):
    self.nextValidOrderId = orderId