* collecting scientific-oriented Python libraries and development environment tools (e.g. Eclipse plugins) ;

* collecting almost all free related documentation ;

* providing a quick guide to get started in Python / Qt / Eclipse ;

* configuring Eclipse to be ready to develop in Python, and adjusting some Windows parameters (file type association, windows explorer integration, ...) ;

* providing an all-in-one setup program, so the user can install or uninstall all these packages and features by clicking on one button only.

</quote> http://www.pythonxy.com/features.php