The description does not account for non iterable arguments

TypeError: 'NoneType' object is not iterable

Well, you could do even something better: suggest improvements!

I blame YouTube for that.
Hence mob-upvoting the refactoring of a brute force solution into a method that replicates the behavior of native Java, except with higher CPU overhead.
This site offers a wonderful chance to actually learn a new language and use everything it has to offer, but not everyone is willing to take on the challenge.
I say they're missing out, but to each their own.

I'm new here, and loving it so far, so I really appreciate your input!
I guess I'll have to keep my eyes peeled for more of his "work", then. No big deal.
Cheers and keep coding!

I have decided to block this poor sap (so I won't come across any more of his work)

I don't think user blocking feature works that way, no, it doesn't. You'll have to look at the author's name and decide for yourself.

After going over the ambiguous "description" and seeing how the test cases are withheld (very useful, really!), I have decided to block this poor sap (so I won't come across any more of his work) and move on.
As developers, we're bound to find people like g964.
The best practice is to be zen, and just move right past them.
A Samurai's katana is not meant for killing mosquitos.