Install virtualenv: pip install virtualenv mkdir ~/.virtualenvs virtualenv ~/.virtualenvs/my_new_project Activate it to continue development:

Install virtualenv: pip install virtualenv mkdir ~/.virtualenvs virtualenv ~/.virtualenvs/my_new_project Activate it to continue development: . ~/.virtualenvs/my_new_project/bin/activate The effect of this is that `python` and `pip` commands now only act on the virtualenv and not system (or user) site wide. Deactivate it: deactivate Python and pip commands are now the system versions again.