python
diff --git a/‎Lib/test/test_code.py‎
Lines changed: 0 additions & 12 deletions b/‎Lib/test/test_code.py‎
Lines changed: 0 additions & 12 deletions
diff --git a/‎Modules/_testinternalcapi.c‎
Lines changed: 0 additions & 54 deletions b/‎Modules/_testinternalcapi.c‎
Lines changed: 0 additions & 54 deletions
@@ -1088,18 +1088,6 @@ def test_stateless(self):
                     with self.assertRaises(Exception):
                         _testinternalcapi.verify_stateless_code(func)
 
-        def spam():
-            pass
-
-        with self.subTest('with co_extra'):
-            _testinternalcapi.verify_stateless_code(spam)
-            extra = 'spam'
-            _testinternalcapi.code_set_co_extra(spam.__code__, 0, extra)
-            with self.assertRaises(ValueError):
-                _testinternalcapi.verify_stateless_code(spam)
-            _testinternalcapi.code_set_co_extra(spam.__code__, 0, expect=extra)
-            _testinternalcapi.verify_stateless_code(spam)
-
 
 def isinterned(s):
     return s is sys.intern(('_' + s + '_')[1:-1])
 
@@ -1206,58 +1206,6 @@ verify_stateless_code(PyObject *self, PyObject *args, PyObject *kwargs)
     Py_RETURN_NONE;
 }
 
-static PyObject *
-code_set_co_extra(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    PyObject *codearg;
-    Py_ssize_t index;
-    PyObject *value = NULL;
-    PyObject *expected = NULL;
-    PyObject *notset = Py_None;
-    static char *kwlist[] =
-            {"code", "index", "value", "expect", "notset", NULL};
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
-                    "O!n|OOO:code_set_co_extra", kwlist,
-                    &PyCode_Type, &codearg, &index, &value, &expected, &notset))
-    {
-        return NULL;
-    }
-
-    void *extra;
-    if (PyUnstable_Code_GetExtra(codearg, index, &extra) < 0) {
-        return NULL;
-    }
-
-    PyObject *old;
-    if (extra == NULL) {
-        old = Py_NewRef(notset);
-    }
-    else if (extra == expected) {
-        old = Py_NewRef(expected);
-    }
-    else if (extra == value) {
-        old = Py_NewRef(value);
-    }
-    else {
-        if (expected == NULL) {
-            PyErr_SetString(PyExc_ValueError,
-                            "expected existing co_extra to be NULL");
-        }
-        else {
-            PyErr_Format(PyExc_ValueError,
-                         "expected existing co_extra to be %R", expected);
-        }
-        return NULL;
-    }
-
-    if (PyUnstable_Code_SetExtra(codearg, index, value) < 0) {
-        Py_DECREF(old);
-        return NULL;
-    }
-
-    return old;
-}
-
 #ifdef _Py_TIER2
 
 static PyObject *
@@ -2387,8 +2335,6 @@ static PyMethodDef module_functions[] = {
      METH_VARARGS | METH_KEYWORDS, NULL},
     {"verify_stateless_code", _PyCFunction_CAST(verify_stateless_code),
      METH_VARARGS | METH_KEYWORDS, NULL},
-    {"code_set_co_extra", _PyCFunction_CAST(code_set_co_extra),
-     METH_VARARGS | METH_KEYWORDS, NULL},
 #ifdef _Py_TIER2
     {"add_executor_dependency", add_executor_dependency, METH_VARARGS, NULL},
     {"invalidate_executors", invalidate_executors, METH_O, NULL},