Change by STINNER Victor <vstinner@python.org>: ---------- components: -Documentation, IO title: buffered read() and write() does not raise BlockingIOError -> The io module doesn't support non-blocking files versions: +Python 3.9 -Python 2.7, Python 3.6, Python 3.7 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue13322> _______________________________________