Is it possible to program web app using python without "any" framework?

I'm worked on PHP previously and want to know python web programming. But everything for me is ambiguous.

Is it possible to program web app using python without "any" framework?

I know frameworks make everything easy for us and even if it is possible program web app without framework , it is not logical for big projects. But my target is just learning because I think start programming with frameworks is not good idea and we should know some information about pure python in web applications. So Imagine I want make very very simple webpage like hello world or small counter or small api. please do not offer me lightweight frameworks like flask. I just want know can pure python create webpages?