bpo-30241: implement contextlib.AbstractAsyncContextManager (#1412)

1 files changed, 11 insertions, 0 deletions

diff --git a/Doc/library/contextlib.rst b/Doc/library/contextlib.rst
index 48ca0da..faa6c8a 100644
--- a/Doc/library/contextlib.rst
+++ b/Doc/library/contextlib.rst
@@ -29,6 +29,17 @@ Functions and classes provided:
    .. versionadded:: 3.6
 
 
+.. class:: AbstractAsyncContextManager
+
+   An :term:`abstract base class` for classes that implement
+   :meth:`object.__aenter__` and :meth:`object.__aexit__`. A default
+   implementation for :meth:`object.__aenter__` is provided which returns
+   ``self`` while :meth:`object.__aexit__` is an abstract method which by default
+   returns ``None``. See also the definition of
+   :ref:`async-context-managers`.
+
+   .. versionadded:: 3.7
+
 
 .. decorator:: contextmanager