Page Object mode is a test design pattern in selenium, which is to design each page as a class that contains the elements (buttons, input boxes, headings, etc.) that need to be tested on the page. This allows the page element to be fetched by invoking the page class on the Selenium test page, which subtly avoids the need to test the page code when the page element ID or location changes. When the page element ID changes, you only need to change the properties of the page in the test page class.
Page Object mode is an automated test design pattern that separates page positioning from business operations and improves the maintainability of use cases.
UnitTest is a unit testing framework designed to design a wide variety of test cases and invoke PageObject-designed page classes (objects). It provides the use case organization and execution, provides the command comparison (assertion) method, provides the rich log, unifies applies to the Web automation use case development and the execution.
Python+selenium using Page object for automated testing of pages-not yet done