1. Untar the .tar.gz file.

2. cd into the resulting directory.

3. Run python setup.py install. Depending on your system, you may need root access for this step.

If you've already downloaded the .egg file:

easy_install functional-x.y-py2.4.egg

easy_install can also fetch and install functional directly from PyPI:

easy_install functional

So, now that you've followed the instructions for grabbing a copy of functional's Subversion repository, what do you do with it? The procedure for installing from a checkout is the same as installing from a source distribution: python setup.py install. Note that you may need root access for this operation, depending on your setup.