[Python] IBRK TWS API error() takes 4 positional arguments but 5 were given

Discussão em 'Python' iniciado por Stack, Agosto 3, 2025.

  1. Stack

    Stack Membro Participativo

    If I run a basic TWS example, I receive the error message . If I comment out the error() call back it runs fine. I've tried this on several examples and get the same result.

    Exception has occurred: TypeError

    error() takes 4 positional arguments but 5 were given

    File "/Users/jayurbain/Dropbox/twsapi/Algorithmic Trading using Interactive Broker's
    Python API /ib_basic_app.py", line 20, in <module> app.run()


    Please advise.

    Here's the call back that is being overridden in wrapper.py:

    def error(self, reqId:TickerId, errorCode:int, errorString:str, advancedOrderRejectJson = ""):


    Here is the entire code:

    from ibapi.client import EClient
    from ibapi.wrapper import EWrapper

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

    def error(self, reqId, errorCode, errorString):
    print("Error {} {} {}".format(reqId,errorCode,errorString))

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

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