it doesn't work for None

Damn I feel dumb. Thank you for showing me how to do it better

Thank you, for explain it!

I am also write like this

i feel like thats the best way to learn lol, at least imo.

Thanks for taking the time to clarify, appreciated.

I really don't understand how this one works

I was so frustrated trying to figure this out. Gave in and tested the top rated solution only to get this. Way she goes.

It's always so simple in hindsight

This no longer is a valid solution because we have a testcase in which string = "" and it should return [""]

it basically means you cast a list of a list. don't do it.
the split method already returns a list.