Pablo Galindo Salgado <pablogsal@gmail.com> added the comment: This also happens on Linux, hanging in different moments: ❯ ./python test.py Begin 4 [hangs] ❯ ./python test.py Begin 4 3 [hangs] ❯ ./python test.py [hangs] ---------- _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue34172> _______________________________________