From 07171242d5ea3bc56a05a548ffa2deb9e0e5420d Mon Sep 17 00:00:00 2001 From: Victor Stinner Date: Mon, 24 Feb 2014 13:18:47 +0100 Subject: [PATCH] subprocess.Popen.wait doc: mention asyncio to avoid busy loop --- Doc/library/subprocess.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst index 1a9dd9d390..f03c322942 100644 --- a/Doc/library/subprocess.rst +++ b/Doc/library/subprocess.rst @@ -629,6 +629,12 @@ Instances of the :class:`Popen` class have the following methods: :exc:`TimeoutExpired` exception. It is safe to catch this exception and retry the wait. + .. note:: + + The function is implemented using a busy loop (non-blocking call and + short sleeps). Use the :mod:`asyncio` module for an asynchronous wait: + see :class:`asyncio.create_subprocess_exec`. + .. warning:: This will deadlock when using ``stdout=PIPE`` and/or -- 2.40.0