diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst index d8e1a7443fa..97c10780226 100644 --- a/Doc/library/asyncio-eventloop.rst +++ b/Doc/library/asyncio-eventloop.rst @@ -34,8 +34,10 @@ an event loop: .. function:: get_event_loop() - Get the current event loop. If there is no current event loop set - in the current OS thread and :func:`set_event_loop` has not yet + Get the current event loop. + + If there is no current event loop set in the current OS thread, + the OS thread is main, and :func:`set_event_loop` has not yet been called, asyncio will create a new event loop and set it as the current one. diff --git a/Misc/NEWS.d/next/Documentation/2020-01-18-15-37-56.bpo-39381.wTWe8d.rst b/Misc/NEWS.d/next/Documentation/2020-01-18-15-37-56.bpo-39381.wTWe8d.rst new file mode 100644 index 00000000000..37b66ad9dfd --- /dev/null +++ b/Misc/NEWS.d/next/Documentation/2020-01-18-15-37-56.bpo-39381.wTWe8d.rst @@ -0,0 +1,2 @@ +Mention in docs that :func:`asyncio.get_event_loop` implicitly creates new +event loop only if called from the main thread.