These are general guide lines and not hard and fast rules.

The recommended method of installing via pip is:

  python[3] -m pip install --user <somepackage>

Installing python modules system wide is normally done when a larger group of people need a particular module.

This is the recommended method of installation. I will refer you to pip 's --user option install any python module under your user account. These will be installed under $HOME/.local.

1. https://mail.python.org/pipermail/distutils-sig/2015-November/027536.html
2. https://github.com/pypa/pip/issues/3164