Page-object model is a pattern that you can apply it to develop efficient automation framework. With page-model, it is possible to minimise maintenance cost. Basically page-object means that your every page is inherited from a base class which includes basic functionalities for every pages. If you have some new functionality that every pages have, you can simple add it to the base class.
####If you want to run it, you should type:
python <module-name.py> ####If you want to run it just a class, you should type:
python <module-name.py> <class-name>