Python is a dynamic object-oriented programming language that can be used for many kinds of software development. It is also open source, which means that you (and everyone else!) can freely download, modify, and redistribute the source code for Python.
The Google Highly Open Participation ("GHOP") contest is an effort by Google to get secondary and high-school students involved in Open Source software. You can read more about the reasons why they want to do this here. The bottom line, however, is that Google will award you, the student, prizes (including money) for completing tasks that involve working on Python!
If you're a student and you want to learn more about Python and see what kinds of tasks there are, go to the GHOP student page.
If you have any trouble at all using this project, please contact Titus Brown.