Python’s new t-strings

What I really don't get is how it's any different than applying whatever function you would apply to the template, on the f-string variables. So instead of:

   evil = "<script>alert('bad')</script>"
   template = t"{evil}"
   safe = html(template)

Why not just:

    evil = "<script>alert('bad')</script>"
    safe = f"{html(evil)}"

Or even before creating the f-string. Is it just about not forgetting the sanitization/string manipulation part and forcing you to go through that?

Pretty much, yeah. The article highlights that people were using f-strings directly, and they wanted to provide an alternative for lightweight template/interpolation.

I feel like I'm still missing something when they're saying this about the example(s):

"Neither of these examples is possible with f-strings. By providing a mechanism to intercept and transform interpolated values, template strings enable a wide range of string processing use cases."

As far as I can see, anything you do with the template, you could do before building the f-string or inline as in my intial example.