Not conda, but using the built-ins should work for most use cases.
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1. Create a virtual environment named venv
cd $PROJECT_FOLDER
python -m venv venv
2. Activate it. source ./venv/bin/activate
(In vscode, Ctrl+P > Select: Python Interpreter)3. Define and install dependencies
nano requirements.txt
pip install -r requirements.txt
(or just "pip install ___")