[Python-checkins] gh-96641: Do not expose `KeyWrapper` in `_functoolsmodule.c` (gh-96642)

[miss-islington]

https://github.com/python/cpython/commit/eecbb54b620128421b2a5e57f0ec68ba2514abec
commit: eecbb54b620128421b2a5e57f0ec68ba2514abec
branch: 3.10
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2022-09-07T04:50:15-07:00
summary:

gh-96641: Do not expose `KeyWrapper` in `_functoolsmodule.c` (gh-96642)

(cherry picked from commit 2fd7246e97c8cc09b4e3f22933693f9d68f08163)

Co-authored-by: Nikita Sobolev <mail at sobolevn.me>

files:
A Misc/NEWS.d/next/Core and Builtins/2022-09-07-13-38-37.gh-issue-96641.wky0Fc.rst
M Modules/_functoolsmodule.c

diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-09-07-13-38-37.gh-issue-96641.wky0Fc.rst b/Misc/NEWS.d/next/Core and Builtins/2022-09-07-13-38-37.gh-issue-96641.wky0Fc.rst
new file mode 100644
index 000000000000..51faca8716fb
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-09-07-13-38-37.gh-issue-96641.wky0Fc.rst	
@@ -0,0 +1 @@
+Do not expose ``KeyWrapper`` in :mod:`_functools`.
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index fa1452168094..6ad099049db8 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -1470,9 +1470,8 @@ _functools_exec(PyObject *module)
     if (state->keyobject_type == NULL) {
         return -1;
     }
-    if (PyModule_AddType(module, state->keyobject_type) < 0) {
-        return -1;
-    }
+    // keyobject_type is used only internally.
+    // So we don't expose it in module namespace.
 
     state->lru_list_elem_type = (PyTypeObject *)PyType_FromModuleAndSpec(
         module, &lru_list_elem_type_spec, NULL);