Which library should I choose for online Python 3.x interpreter?

Question

Python

Maybe someone came across the organization of the Python 3.x interpreter on the site? What is the best library to use for this?
More about the goals: I’m conducting a remote programming course for schoolchildren, now they send me a solution to problems in an attachment to a letter, but there is a desire to make an interface so that a student can write code right away in the browser, and I can do autotests and save work on the server (therefore, interpreters in iframes are not suitable).
I'm looking for the most stable option so that schoolchildren do not have to deal with interpreter errors, they have enough errors in their programs :)
At the moment I'm leaning towards brython, do you have experience using it?

Answer 1

I'm not sure that there are ready-made solutions, but you can try some sandbox + code editor ( I found some garbage
)

Answer 2

and https://ideone.com/ not?