Serhiy Storchaka <storchaka+cpython@gmail.com> added the comment: I concur with David. This is an imlementation detail. No need to prefix it with a _ if the module uses __all__for public names. ---------- nosy: +serhiy.storchaka _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue31369> _______________________________________