Well, I would like it if the solution supported standard Python typing. Here I can create a "component" that expects a specific type of the first child and a specific type of the second child. I would probably have to use a separate tool for some kind of type-checking the SXML or something.
BTW in Rust, you can create macros, that is something I like a lot as you can see in yew framework - https://yew.rs/docs/getting-started/build-a-sample-app#updat... - you can write HTML which probably are typed. Python doesn't have anything like that, I don't know about any other way to do this.
Whether compile time guarantees or not, even having HTML elements as objects would be better than putting them into the f-strings. With objects we could probably pattern match on then and traverse the tree, instead of having to rely on other tooling or even regex to search for things inside an f-string.
BTW in Rust, you can create macros, that is something I like a lot as you can see in yew framework - https://yew.rs/docs/getting-started/build-a-sample-app#updat... - you can write HTML which probably are typed. Python doesn't have anything like that, I don't know about any other way to do this.
// edit typo