You need to figure if a wellfounded and wellsized iterable is completely empty.
An iterable x0 is wellfounded if there is no infinite sequence
... in x3 in x2 in x1 in x0(where
inis meant iteratively,
x(n+1)will be encountered while iterating through
A wellfounded iterable is wellsized if it has only finitely many iterable elements, and all of them are wellsized.
A wellfounded iterable is completely empty when all its elements are completely empty. ...
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