How to run Lean with python locally by Sulfred

Sulfred

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I download the project from github. I compile it with VS2019, and updated the config file. I then try to run a simple algorithm. An error comes up.

ERROR:: WorkerThread.<.ctor>b__7_0(): WorkerThread(): exception thrown when running task Python.Runtime.PythonException: NameError : name 'Resolution' is not defined

I would like to ask which library should I import? Thank you.

Attached the code I am testing. I have already added to the head of the file but don't know how to continue:

from QuantConnect.Algorithm import *

Thank you very much.

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Sulfred

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Aaron Janeiro Stone

4.7k ,

I am unsure of exactly what your code looks like as the linked backtest does not show the imports. Try again with clr/quantconnect imports before any non-Lean libraries or ensure that your import arguments are made *FIRST* in the .py file. I just debugged a similar problem in my environment and noticed that algos without third party imports and make such import args immediately had no issues with Resolution (e.g., WarmupAlgorithm.py should work).

Sulfred

1.2k ,

Aaron Janeiro Stone

Thank you. I would like to ask if there is a way to find the correct package to import for local lean ? For example, if I am using MorningstartSectorCode.xxx, how can I know which quantconnect package should I import ?

Shile Wen

63.4k ,

Hi Sulfred,

One method of finding the correct imports would be to run the algorithm, get the error, look for the class in LEAN using the IDE search, then add that import, and repeat this step until all of the necessary imports have been added.

Best,
Shile Wen

Sulfred

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