[docs] [issue12103] Document how to use open with os.O_CLOEXEC

[Éric Araujo]

Changes by Éric Araujo <merwok at netwok.org>:


----------
keywords: +easy
nosy: +eric.araujo
title: Documentation of open() does not claim 'e' support in mode string -> Document how to use open with os.O_CLOEXEC
versions: +Python 3.3 -Python 2.7

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12103>
_______________________________________