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Hi,
Is there a way to debug a new python algorithm (strategy) in Visual Studio? If not, any other way to run the backtest and debug the python part?
Thanks
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Alexandre Catarino
Since Lean engine is written in C# debugging python algorithms is "tricky" and far from perfect.
You need to add the following lines to your code:
import sys import time # Add this line before the debug breakpoint while not sys.gettrace(): time.sleep(0.01)Compile Lean and run it from the command line.
The algorithm will be waiting for the debugging session due to the while loop.
In Visual Studio, select to Debug -> Attach Process. In the Attach To Process window, at "attach to" select "Python Code" and select QuantConnect.Lean.Launcher.exe in the "Available processes":
Momentum
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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