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Hi everyone,
I keep on getting:
"Runtime Error: 'NoneType' object has no attribute 'Reset' at OnSecuritiesChanged symbolData.Reset() at Python.Runtime.PythonException.ThrowLastAsClrException() at Python.Runtime.PyObject.Invoke(PyTuple args in portfolio.py: line 130"
between 2017-2018 in my backtests. Does anyone know how I could fix this error or continue through the backtest by skipping that data point?
Upvote
The error message "Runtime Error: 'NoneType' object has no attribute 'Reset'" typically means that you're trying to call the Reset method on an object that is None. This could happen if the symbolData object is not properly initialized before the Reset method is called.
In your OnSecuritiesChanged method, you are calling Reset on symbolData without checking if it's None. Here is the problematic part of your code:
for removed in changes.RemovedSecurities:symbolData = self.symbolDataBySymbol.pop(removed.Symbol, None)symbolData.Reset()
You should check if symbolData is None before calling Reset. Here is an example of how you can do this:
for removed in changes.RemovedSecurities:symbolData = self.symbolDataBySymbol.pop(removed.Symbol, None)if symbolData is not None:symbolData.Reset()
In this code, symbolData is checked if it's None before calling Reset. If it's not None, the Reset method is called. This should help you avoid calling methods on None objects and fix your error.
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