Web Development, putting python in the browser

I want to write a web page that allows the user to upload a set of python files and then it shows the file contents based on the selected file and allows the user to then run the file and see the output/interact with any prompts.

I am looking for recommendations on language, libraries and/or frameworks to consider for this project. It will only be used by my programming professor for now so it doesn't have to be perfect, I'm just trying to save him from opening and running each file separately for his intro course.

I have looked into Django and I don't think I need that much out of the box considering it is a 1-2 page web app. Anything on libraries or languages that can make this project easier would be highly appreciated. Thanks in advance!

This is a picture of what I am wanting to make.(My account is too new and I couldn't just post it so click the link)