Templating engine in python stdlib?

I am a great proponent of the python standard library, I love having lots of tools in there and hate having to resort to thirdparty libs. This is why I was wondering if there could be a real templating engine in the stdlib some day? I'm not a great user of templates, but sometimes string.Template is just not good enough and real templating would make things a lot more readable.

Not being a great templating user I don't know how the world of templating looks. Is there a template engine out there which would be a candidate to move to the stdlib? Or do most people think this is a stupid idea? Or maybe this has been discussed before and I didn't find the discussion?