python

list the installed packages and folder

pip list -v

virtual environment to handle python packages

Follow the next steps to create a virtual environment:

pip install virtualenv
virtualenv venv
source venv/bin/activate
source venv/bin/deactivate

Once you have installed the venv, you can install the packages you need. The virtual environment is a folder that contains all the packages you install locally. Referring to a current project.

If you don't want to install the packages in the global environment, you can use the virtual environment.

install a package local o global

Depended on if you are using a virtual environment or not. If it is so, you can install the package locally, and if not, you can install it globally.

pip install package_name

install some lib with requirements.txt

pip install -r requirements.txt

run test

python -m unittest discover -s tests
pytest tests