Serhiy Storchaka added the comment: The fileno parameter was added in the changeset 8e062e572ea4. It was mentioned in comments at the top of Modules/socketmodule.c, but not in the documentation or docstrings (nor for _socket.socket, nor for socket.socket). ---------- assignee: -> docs@python components: +Documentation nosy: +docs@python, pitrou, serhiy.storchaka type: -> enhancement _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue16802> _______________________________________