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-rw-r--r--Doc/library/asyncio-eventloop.rst4
1 files changed, 3 insertions, 1 deletions
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index d6c2e30..748d4e3 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -85,7 +85,9 @@ keywords to your callback, use :func:`functools.partial`. For example,
.. method:: BaseEventLoop.call_soon(callback, \*args)
- Arrange for a callback to be called as soon as possible.
+ Arrange for a callback to be called as soon as possible. The callback is
+ called after :meth:`call_soon` returns, when control returns to the event
+ loop.
This operates as a FIFO queue, callbacks are called in the order in
which they are registered. Each callback will be called exactly once.