asyncio/docs: Mark asyncio.run() as provisional in 3.7. (#6946)

1st1 · web-flow · commit d8d715f5148d · 2018-05-17T13:44:00.000-04:00
diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
@@ -108,6 +108,8 @@ Coroutines (and tasks) can only run when the event loop is running.
     programs, and should ideally only be called once.
 
     .. versionadded:: 3.7
+       **Important:** this has been been added to asyncio in Python 3.7
+       on a :term:`provisional basis <provisional api>`.
 
 
 .. _asyncio-hello-world-coroutine:
