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Unable to run LEAN on desktop

Hello all!

I'm trying to get LEAN to work on my desktop however I'm having a problem when running the Quantconnect.Lean.Launcher. It opens the GUI but throws me the following error: (Error Algorithm.Initialize() Error: During the algorithm initialization, the following exception has occurred: Loader.TryCreatePythonAlgorithm(): Unable to import python module ../../../Algorithm.Python/BasicTemplateFrameworkAlgorithm.py. The DLL 'python36' couldn't be loaded. The module wasn't found.)

Thing is I have anaconda installed and I am able to use python in other contexts. In my anaconda installation folder I dont have a python36.dll but I instead have a newer python37.dll. How can I fix this issue?

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Hi Tomas,

LEAN currently does not support Python 3.7. You'll need to download a previous version of Anaconda with Python 3.6 or just 3.6 itself.

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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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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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