To create a virtual environment, you can use the mkvirtualenv command:
This will create a folder called myenv in ~/Envs. This command will automatically put you inside of the environment.
If you want to use a different version of Python, you can specify the version when creating the environment using the -p argument. For me, to create a Python 3.5 environment I use:
mkvirtualenv -p /usr/local/bin/python3.5 py35
This creates an environment named py35 and specifies /usr/local/bin/python3.5 as the Python executable. After we create the environment, run python --version to verify the version of Python being used.
Virtualenvwrapper provides a nice way to create a new project and virtual environment with the same command:
This will create the virtual environment called myproject as well as a project directory. After running this command you'll be working in your virtual environment and cd'd into the project directory.
To enter a virtual environment, you can use the workon command:
To find a list of existing virtual environments, use the lsvirtualenv command:
To get out of the virtual environment, you can use the normal virtualenv command:
Or, you can simply close your shell. When you open a new shell you will land in your original environment. Then, to renter the virtual environment, use the workon command from the previous step.
List virtual environments:
Make a temporary virtual environment:
Copy a virtual environment:
cpvirtualenv [env] [targetenv]
To list all of the site packages from within the virtual environment:
Remove all of the third party packages from the current virtual environment:
For a complete list of commands, refer to the virtualenvwrapper documentation.