[docs] [issue19992] subprocess documentation not explicit about fileno()

Cheryl Sabella <cheryl.sabella@gmail.com> added the comment: Assigning to @Mariatta for the sprints. ---------- assignee: docs@python -> Mariatta nosy: +Mariatta, cheryl.sabella type: -> enhancement versions: +Python 3.7, Python 3.8 -Python 2.7, Python 3.5, Python 3.6 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue19992> _______________________________________