There are various methods for installing 3rd party python libraries from PyPI [1], including easy_install, pip, or just extracting the tarball from PyPI and running `python setup install`.

1: http://pypi.python.org/pypi

Edit: There's also the official documentation page called "Installing Python Modules" which covers the last of those three methods: http://docs.python.org/install/index.html

Edit 2: and from the FAQs, http://docs.python.org/faq/library.html#general-library-ques...