Green provides clean output for Python unit tests. Compare it to nose, nose2, or trial.

To use green with existing Python unit tests, just run green in the home directory of your project. (or green2 or green3, or green-X.X where X.X is your python version).

For more advanced usage, see green --help

For most versions of python 2.x you should use pip. You may have to preface this command with sudo if you do not have root permissions.

pip install green

For more recent versions of Python 3, the command is usually nearly the same (you still may have to preface the command with sudo).

pip3 install green

Just add the --upgrade option to what you used above. For example:

pip3 install --upgrade green

Replace install with uninstall in the command from the Installation section above.