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virtualenv venv
venv/Scripts/activate
pip install name
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# this is needed only once
# 'new_project' is the name of the folder, can be new or already existing
$ python3.9 -m venv new_project
$ cd new_project/
$ source bin/activate
(new_project) $ # pip install <modules>
(new_project) $ # do some scripting
(new_project) $ deactivate
$ # you're now out of the virtual environment