From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Sun, 25 Mar 2018 17:40:38 +0000 (-0700)
Subject: Clarify fd inheritance when close_fds=False. (GH-6240)
X-Git-Tag: v3.7.0b3~24
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=bc3e009f652e12f063c781cd1cec25ef71e00a7b;p=python

Clarify fd inheritance when close_fds=False. (GH-6240)


Clarify the subprocess documentation.
(cherry picked from commit dfb6e54dd8dbd735f55109ad8ee9dfcb6178ede9)

Co-authored-by: Gregory P. Smith <greg@krypto.org>
---

diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index db7a88af6b..fbf2c3d9fa 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -459,7 +459,10 @@ functions.
       common use of *preexec_fn* to call os.setsid() in the child.
 
    If *close_fds* is true, all file descriptors except :const:`0`, :const:`1` and
-   :const:`2` will be closed before the child process is executed.
+   :const:`2` will be closed before the child process is executed.  Otherwise
+   when *close_fds* is false, file descriptors obey their inheritable flag
+   as described in :ref:`fd_inheritance`.
+
    On Windows, if *close_fds* is true then no handles will be inherited by the
    child process unless explicitly passed in the ``handle_list`` element of
    :attr:`STARTUPINFO.lpAttributeList`, or by standard handle redirection.