[hangtwenty]

I am so glad to learn about these features in Rust and Elixir. I'm coming from Python originally, so I always want them!

https://docs.python.org/3/library/doctest.html

https://docs.pytest.org/en/stable/doctest.html

[mcintyre1994]

I had no idea that Python had a library for this, nice! Skimming that doc, it's especially impressive how well it looks to handle exception tracebacks.