In the 4th mission of the series more light bulbs are added.
You still must determine how long the room will be lit during the observation period between start_watching and end_watching. But now we have more than one light bulb. This means that in the light bulb switching array can now also be passed the number of the light bulb, the button of which is being pressed.
Each element of the button clicking array can be either a datetime object (which means the time when the first button was pressed) or a tuple of 2 elements (where the first elements is a datetime object, the time the button was pressed),...
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=js 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
Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.