[Python-checkins] bpo-45680: ``typing`` docs: improve links to docs on ``GenericAlias``/``__class_getitem__`` (GH-29387)

[miss-islington]

https://github.com/python/cpython/commit/e813dd4d7bb0ecfabc7dae75e13f58164bcf8da6
commit: e813dd4d7bb0ecfabc7dae75e13f58164bcf8da6
branch: 3.9
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2021-11-03T21:34:31-07:00
summary:

bpo-45680: ``typing`` docs: improve links to docs on ``GenericAlias``/``__class_getitem__`` (GH-29387)

(cherry picked from commit e03e50377d6f8f212af60fed4ae405ebeb73237d)

Co-authored-by: Alex Waygood <Alex.Waygood at Gmail.com>

files:
A Misc/NEWS.d/next/Documentation/2021-11-03-14-51-03.bpo-45680.9_NTFU.rst
M Doc/library/typing.rst

diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
index 295f2ae8905af..068112d8d9451 100644
--- a/Doc/library/typing.rst
+++ b/Doc/library/typing.rst
@@ -49,8 +49,8 @@ annotations. These include:
      *Introducing* :class:`Protocol` and the
      :func:`@runtime_checkable<runtime_checkable>` decorator
 * :pep:`585`: Type Hinting Generics In Standard Collections
-     *Introducing* the ability to use builtin collections and ABCs as
-     :term:`generic types<generic type>`
+     *Introducing* :class:`types.GenericAlias` and the ability to use standard
+     library classes as :ref:`generic types<types-genericalias>`
 * :pep:`586`: Literal Types
      *Introducing* :class:`Literal`
 * :pep:`589`: TypedDict: Type Hints for Dictionaries with a Fixed Set of Keys
@@ -258,8 +258,8 @@ A user-defined class can be defined as a generic class.
 single type parameter ``T`` . This also makes ``T`` valid as a type within the
 class body.
 
-The :class:`Generic` base class defines :meth:`__class_getitem__` so that
-``LoggedVar[t]`` is valid as a type::
+The :class:`Generic` base class defines :meth:`~object.__class_getitem__` so
+that ``LoggedVar[t]`` is valid as a type::
 
    from collections.abc import Iterable
 
diff --git a/Misc/NEWS.d/next/Documentation/2021-11-03-14-51-03.bpo-45680.9_NTFU.rst b/Misc/NEWS.d/next/Documentation/2021-11-03-14-51-03.bpo-45680.9_NTFU.rst
new file mode 100644
index 0000000000000..79ea6e308e54a
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2021-11-03-14-51-03.bpo-45680.9_NTFU.rst
@@ -0,0 +1,3 @@
+Amend the docs on ``GenericAlias`` objects to clarify that non-container
+classes can also implement ``__class_getitem__``. Patch contributed by Alex
+Waygood.