I'm just never going to understand why you'd want to write your HTML in something unlike HTML (Python in this case). Then you need to know the thing that isn't like HTML, plus HTML, plus the details of how the other thing is transformed to HTML.

Of course, we often need something dynamic, so we can't just use HTML. But why not something a lot like HTML so those additional pieces are as small and simple as possible... you know... like a template engine.