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Can Python projects can only use 'main.py' now?

Since the upgrade to the Python LEAN engine, my projects are broken. I get the build error:

"Build Error: File: n/a Line:0 Column:0 - No python main.py module. Ensure there is only one file, named main.py"

The error goes away if I delete every file except for 'main.py'.

Screenshot of example project with one extra file with zero code, does not build:

Same project right after deleting the extra file:

Is this how it's meant to behave? Now we have to put all code in 'main.py' instead of being able to use imports? If not, what's the fix?

Thanks!

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Correct this is how its supposed to behave. It was a side effect of making python external libraries function. Depending on demand we may add multiple files back at a later date but we observe 95% of python users, and 85% of C# users put everything into one file.

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Update Backtest





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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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