Browser-based testing is hard to get right. There are wonderful tools out there like Seleinum that allow us to drive a web browser around our sites with the minimum of effort to provide true integration tests.
With this great power however, comes a great way to create thousands of lines of complicated test code with finicky timeouts and brittle execution. Tests that are often easier to set fire to and re-write than fix when your designers decide to change the layout of the HTML.
What Page Objects are for is to encourage you to write your browser tests in a maintainable and supportable way that makes it easier to keep the tests alive as the underlying site changes.
The Page Object model isn’t new, or something that I’ve invented here. There are numerous examples and discussions on the web: http://lmgtfy.com/?q=Page+Object+Model
This is an implementation of the pattern for Python using Selenium webdriver that I have found useful as my time as a developer. It is not tied to any particular test framework. The codebase is tiny and has remained largely unchanged for several years. I hope you enjoy using them as much as I have!