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bpo-34616: Document top level async in whatsnew/3.8. (GH-13484)

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https://bugs.python.org/issue34616
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Matthias Bussonnier 2019-05-22 12:07:45 -07:00 • committed by Miss Islington (bot)
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Doc/whatsnew/3.8.rst
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@ -237,6 +237,16 @@ asyncio
On Windows, the default event loop is now :class:`~asyncio.ProactorEventLoop`.
builtins
--------
The :func:`compile` built-in has been improved to accept the
``ast.PyCF_ALLOW_TOP_LEVEL_AWAIT`` flag. With this new flag passed,
:func:`compile` will allow top-level ``await``, ``async for`` and ``async with``
constructs that are usually considered invalid syntax. Asynchronous code object
marked with the ``CO_COROUTINE`` flag may then be returned.
(Contributed by Matthias Bussonnier in :issue:`34616`)
collections
-----------