Éric Araujo <mer...@netwok.org> added the comment: apt build-dep (or aptitude build-dep) is a command used to get build-time dependencies for the system package, which are not always the same as the upstream in-development version of Python.
As the error message told you, you need deb-src lines in your sources.list to have this work. An example is here, it may not be up-to-date (refers to ubuntu bionic and python3.6) but hopefully you can adapt it: https://devguide.python.org/setup/#build-dependencies I think more explanations should come from ubuntu documentation or forums, not Python docs; Python can’t document every facility from every OS. ---------- nosy: +eric.araujo _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43992> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
