Usage in a library package

You can use application_settings also to parametrize a library package:

• Define parameters in one or more Section classes (i.e., not in a Container) - best practice is to have a single main section with possibly nested sub-sections;
• Use parameters in the code of your library by invoking class method get() on your Section class(es) (see chapter on using parameters);
• The application that uses your library has to take care of loading stored values into your parameters. This can be done in two ways:
• If the application also uses application_settings, it's simple; the main Section of your library package just needs to be contained in the Container of the application;
• If the application does not use application_settings, then the application should invoke class method set(data: dict[str, Any]) on your main Section, where data holds key-value-pairs with the name of the parameter and the value. Subsections can be set by the name of the section as key and a nested dictionary for the subsection parameters. Note that set() should be invoked before any get() is done.