For Python virtual environments, by default we should use venv

[reveurmichael]

• https://www.reddit.com/r/learnpython/comments/or1qwh/virtualenv_vs_pipenv_vs_conda_is_one_superior_to/
• https://www.rootstrap.com/blog/how-to-manage-your-python-projects-with-pipenv-pyenv/

According to https://peaku.co/questions/4912-%C2%BFcual-es-la-diferencia-entre-venv,-pyvenv,-pyenv,-virtualenv,-virtualenvwrapper,-pipenv,-etc :

I suggest you choose one of the two official ways to manage virtual environments:

• Python Packaging now recommends Pipenv
• Python.org now recommends venv

According to https://stackoverflow.com/questions/41573587/what-is-the-difference-between-venv-pyvenv-pyenv-virtualenv-virtualenvwrappe:

• venv creates virtual environments in the shell that are fresh and sandboxed, with user-installable libraries, and it's multi-python safe.
• I think python will be a better platform when we eliminate this additional option and only use venv.

[reveurmichael]

My experience with students suggest that we should not use Conda, which is just a mess.