Issue #28720: Add collections.abc.AsyncGenerator.

2 files changed, 12 insertions, 0 deletions

diff --git a/Doc/library/collections.abc.rst b/Doc/library/collections.abc.rst
index e4b75a0..3ac49db 100644
--- a/Doc/library/collections.abc.rst
+++ b/Doc/library/collections.abc.rst
@@ -92,6 +92,7 @@ ABC                        Inherits from          Abstract Methods        Mixin
 :class:`Coroutine`         :class:`Awaitable`     ``send``, ``throw``     ``close``
 :class:`AsyncIterable`                            ``__aiter__``
 :class:`AsyncIterator`     :class:`AsyncIterable` ``__anext__``           ``__aiter__``
+:class:`AsyncGenerator`    :class:`AsyncIterator` ``asend``, ``athrow``   ``aclose``, ``__aiter__``, ``__anext__``
 ========================== ====================== ======================= ====================================================
 
 
@@ -222,6 +223,13 @@ ABC                        Inherits from          Abstract Methods        Mixin
 
    .. versionadded:: 3.5
 
+.. class:: Generator
+
+   ABC for asynchronous generator classes that implement the protocol
+   defined in :pep:`525` and :pep:`492`.
+
+   .. versionadded:: 3.6
+
 
 These ABCs allow us to ask classes or instances if they provide
 particular functionality, for example::
diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst
index 801191c..ce8ab98 100644
--- a/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@ -912,6 +912,10 @@ The new :class:`~collections.abc.Reversible` abstract base class represents
 iterable classes that also provide the :meth:`__reversed__`.
 (Contributed by Ivan Levkivskyi in :issue:`25987`.)
 
+The new :class:`~collections.abc.AsyncGenerator` abstract base class represents
+asynchronous generators.
+(Contributed by Yury Selivanov in :issue:`28720`.)
+
 The :func:`~collections.namedtuple` function now accepts an optional
 keyword argument *module*, which, when specified, is used for
 the ``__module__`` attribute of the returned named tuple class.