[theshrike79]

Doctest is writing unit tests in doctstrings.

That system is an unit test that checks that functions are documented in the documentation. Nothing to do with docstrings.

[dec0dedab0de]

right but docstrings are documentation, so if your doctest is working, then at least that part of the documentation is correct.

Even without doctest, generating your documentation from docstrings is much easier to keep updated than writing your documentation somewhere else, because it is right there as you are making changes.