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TypeError: TestApp.error() takes 4 positional arguments but 5 were given
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Joel Gross
I have been running TWS API with Python for years without many issues. Suddenly my code that worked yesterday is no longer working. Any file I run, I get an error like this:
Traceback (most recent call last):
? File "c:\Users\joel\joelvscode\ib\ibapp\ibapi\value_stock_picker\11_get_tws_fundamental_data.py", line 296, in <module>
? ? main()
? File "c:\Users\joel\joelvscode\ib\ibapp\ibapi\value_stock_picker\11_get_tws_fundamental_data.py", line 287, in main
? ? app.run()
? File "c:\users\joel\joelvscode\ib\ibapp\ibapi\launchLoop.py", line 409, in run
? ? self.decoder.interpret(fields)
? File "c:\Users\joel\joelvscode\.venv\lib\site-packages\ibapi\decoder.py", line 1377, in interpret
? ? self.interpretWithSignature(fields, handleInfo)
? File "c:\Users\joel\joelvscode\.venv\lib\site-packages\ibapi\decoder.py", line 1358, in interpretWithSignature
? ? method(*args)
? File "c:\users\joel\joelvscode\ib\ibapp\ibapi\launchLoop.py", line 515, in nextValidId
? ? self.start()
? File "c:\Users\joel\joelvscode\ib\ibapp\ibapi\value_stock_picker\11_get_tws_fundamental_data.py", line 137, in start
? ? self.runWithoutSchedule()
? File "c:\users\joel\joelvscode\ib\ibapp\ibapi\launchLoop.py", line 466, in runWithoutSchedule
? ? self.decoder.interpret(fields)
? File "c:\Users\joel\joelvscode\.venv\lib\site-packages\ibapi\decoder.py", line 1379, in interpret
? ? handleInfo.processMeth(self, iter(fields))
? File "c:\Users\joel\joelvscode\.venv\lib\site-packages\ibapi\decoder.py", line 1273, in processErrorMsg
? ? self.wrapper.error(reqId, errorCode, errorString, advancedOrderRejectJson)
TypeError: TestApp.error() takes 4 positional arguments but 5 were given I am running Windows 10, TWS Latest, API Latest. About the time this error started, I had to switch from Visual Studio Code to Visual Studio Code Insiders. Python files run regularly under VS Code Insiders just fine. What could cause this to happen?? |
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I came across this the other day.? I believe that IB has been making major changes to the API (in minor patch releases). Look for your definition of error().? It now takes 5 arguments and not 4. So something like this: ??? def error(self, ????????????? reqId: TickerId, ????????????? errorCode: int, ????????????? errorString: str):? Needs to be changed to: ??? def error(self, ????????????? reqId: TickerId, ????????????? errorCode: int, ????????????? errorString: str, ????????????? advancedOrderRejectJson=""): Take a look at the API Docs.? They have some boilerplate code around using that new advancedOrderRejectionJson parameter. -s On Thu, Aug 11, 2022, at 6:27 PM, Joel Gross wrote:
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Nope. The advancedOrderRejectJson field was introduced in API version 10.14.01 in January 2022 and went through beta and is, obviously, in the current "latest" version 10.17.01. Version 10 has many and large changes compared with the current stable version 9.81 and is still rapidly getting new features. 闯ü谤驳别苍 On Thu, Aug 11, 2022 at 06:20 PM, @sbank wrote:
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Well, if your code was written against a version 9 API, you might want to stay with the stable API? 9.81 track for now. You can still run your code against all (even the latest and beta) TWS and IBGW versions. It's a good practice to lock the API version in and to avoid automatic and uncontrolled version changes. But by its nature, the stable track is a couple years old and is lacking the latest features version 10 provides. So you might want to start the development, unit, system, and regression testing cycles so that you can eventually move to the version 10 API. 闯ü谤驳别苍 On Thu, Aug 11, 2022 at 08:44 PM, Joel Gross wrote:Wow, thanks guys! Tons of major changes it looks like.? |
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