From: Victor Stinner <victor.stinner@gmail.com>
Date: Tue, 10 Jun 2014 09:16:05 +0000 (+0200)
Subject: Issue #21596: asyncio.wait(): mention that the sequence of futures must not
X-Git-Tag: v3.4.2rc1~409
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=db74d982d43d98040e38665d843cbc8de4a082b1;p=python

Issue #21596: asyncio.wait(): mention that the sequence of futures must not
be empty.
---

diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
index eb254a9152..f1894daf31 100644
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -521,6 +521,8 @@ Task functions
    to complete.  Coroutines will be wrapped in Tasks. Returns two sets of
    :class:`Future`: (done, pending).
 
+   The sequence *futures* must not be empty.
+
    *timeout* can be used to control the maximum number of seconds to wait before
    returning.  *timeout* can be an int or float.  If *timeout* is not specified
    or ``None``, there is no limit to the wait time.
diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
index 2aa568bc6d..8b8fb82ed2 100644
--- a/Lib/asyncio/tasks.py
+++ b/Lib/asyncio/tasks.py
@@ -387,6 +387,8 @@ ALL_COMPLETED = concurrent.futures.ALL_COMPLETED
 def wait(fs, *, loop=None, timeout=None, return_when=ALL_COMPLETED):
     """Wait for the Futures and coroutines given by fs to complete.
 
+    The sequence futures must not be empty.
+
     Coroutines will be wrapped in Tasks.
 
     Returns two sets of Future: (done, pending).