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This approach has worked up until the last couple of days. It is now throwing the following runtime error:
[ERROR] FATAL UNHANDLED EXCEPTION:Engine.Run(): During the algorithm initialization, the following exception has occurred: Attempted to divide by zero. in BuyingPowerModel.cs:line 11
To replicate the error in the attached backtest, uncomment line 20.
Does anyone have any suggestions on this? Thanks!
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Vladimir
Aaron Eller
We were unable to reproduce the error you mentioned.
Aaron Eller
Thanks for checking Vladimir. Seems to be specific to the new 3.0 IDE. It runs fine in 2.0 IDE.
Martin Molinero
Hey Aaron Eller !
Sorry about that, this is solved adding the missing super().__init__() call in the constructor of `CustomBuyingPowerModel`. Python requires an explicit call which was handled by PythonNet previously but this caused other issues so it was removed in the recent update.
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.
Aaron Eller
Got it! Thank you, Martin Molinero
For those interested, here's the fixed backtest to work with 3.0 IDE.
Alexandre Catarino
Hi Aaron Eller,
The QuantConnect Team has discussed this breaking change and Martin Molinero has worked on a solution to ensure backward compatibility. Consequently, the constructor of the Python class does not require super().__init__() when it is a subclass of a LEAN/C# class as before.
Aaron Eller
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.
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