4.1. Add the working_engine class attribute inside the Car class and assign it a value of False.
4.2. Add a start_engine method to the Car class, that displays the message "Engine has started" and changes the working_engine value of the instance of class to True.
4.3. Add a stop_engine method to the Car class, that displays the message "Engine has stopped" and changes the working_engine value of the instance of class to False.
4.4. Call the start_engine method for both instances some_car1, some_car2.
CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.
In order to install CheckiO client you'll need installed Python (version at least 3.8)
Install CheckiO Client first:
pip3 install checkio_client
Configure your tool
checkio --domain=py config --key=
Sync solutions into your local folder
(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)
checkio serv -d
Alternatevly, you can install Chrome extension or FF addon
checkio install-plugin --ff
checkio install-plugin --chromium