The use of the ellipses as a function body placeholder was new to me and seems very readable. Thanks for that.

One slight niggle was in your use of 'l' as a name; You might try avoiding the use of 'l', el and 'o' oh in names as certain fonts make them hard to distinguish from one and zero.

A useful post, thanks :-)

I just levelled up in Python. Thanks.😁

Easy peasy! Love them.