Interactive Brokers TWS API 錯誤信息

Question

下面是我的老師給出的運行程序的錯誤堆棧跟蹤：

 C:\Users\USER\AppData\Local\Programs\Python\Python37\python.exe "D:/miscellaneous/Investment/programming/Chris Wong 20201218/real_python_trading_course 202102/thinkific/ib_api/>     b_api_framework-test01_20210614.py"
 ERROR -1 2104 Market data farm connection is OK:hfarm
 ERROR -1 2104 Market data farm connection is OK:eufarm
 ERROR -1 2104 Market data farm connection is OK:usfuture
 ERROR -1 2104 Market data farm connection is OK:cashfarm
 ERROR -1 2104 Market data farm connection is OK:usfarm
 ERROR -1 2106 HMDS data farm connection is OK:hkhmds
 ERROR -1 2106 HMDS data farm connection is OK:ushmds
 ERROR -1 2158 Sec-def data farm connection is OK:secdefnj
 unhandled exception in EReader thread
 Traceback (most recent call last):
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\reader.py", line 34, in run
     data = self.conn.recvMsg()
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\connection.py", line 99, in recvMsg
     buf = self._recvAllMsg()
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\connection.py", line 119, in _recvAllMsg
     buf = self.socket.recv(4096)
 OSError: [WinError 10038] 嘗試操作的對象不是通訊端。
 Exception in thread Thread-2:
 Traceback (most recent call last):
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\threading.py", line 926, in _bootstrap_inner
     self.run()
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\threading.py", line 870, in run
     self._target(*self._args, **self._kwargs)
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\client.py", line 239, in run
     self.decoder.interpret(fields)
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\decoder.py", line 1280, in interpret
     handleInfo.processMeth(self, iter(fields))
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\site-packages\ibapi-9.76.1-py3.7.egg\ibapi\decoder.py", line 271, in processContractDataMsg
     contract.contract.symbol = decode(str, fields)
 AttributeError: 'ContractDetails' object has no attribute 'contract'

 Traceback (most recent call last):
   File "D:/miscellaneous/Investment/programming/Chris Wong 20201218/real_python_trading_course 202102/thinkific/ib_api/ib_api_framework-test01_20210614.py", line 686, in <module>
     resolved_ibcontract = app.resolve_ib_contract(ibcontract)
   File "D:/miscellaneous/Investment/programming/Chris Wong 20201218/real_python_trading_course 202102/thinkific/ib_api/ib_api_framework-test01_20210614.py", line 342, in resolve_ib_contract
     new_contract_details = self.contract_details_queue.get(timeout = MAX_WAIT_SECONDS)
   File "C:\Users\USER\AppData\Local\Programs\Python\Python37\lib\queue.py", line 178, in get
     raise Empty
 _queue.Empty

 Process finished with exit code 1

任何人都可以幫忙解決這個問題，因為代碼是我老師的知識產權，我不能公開它。

*我買了一台新的筆記本電腦並安裝了 anaconda。 它現在可以工作，所以它應該不是由程序引起的。

Answer 1

這是問題：

contract.contract.symbol = decode(str, fields)
AttributeError: 'ContractDetails' object has no attribute 'contract'

我想你的意思是：

contract.symbol = decode(str, fields)