diff --git a/Python/clinic/sysmodule.c.h b/Python/clinic/sysmodule.c.h
index 8350fbf985..5d0a3c93cd 100644
--- a/Python/clinic/sysmodule.c.h
+++ b/Python/clinic/sysmodule.c.h
@@ -114,6 +114,54 @@ PyDoc_STRVAR(sys_unraisablehook__doc__,
 #define SYS_UNRAISABLEHOOK_METHODDEF    \
     {"unraisablehook", (PyCFunction)sys_unraisablehook, METH_O, sys_unraisablehook__doc__},
 
+PyDoc_STRVAR(sys__callonearg__doc__,
+"_callonearg($module, func, arg, /)\n"
+"--\n"
+"\n"
+"Wrapper.");
+
+#define SYS__CALLONEARG_METHODDEF    \
+    {"_callonearg", (PyCFunction)(void(*)(void))sys__callonearg, METH_FASTCALL, sys__callonearg__doc__},
+
+static PyObject *
+sys__callonearg_impl(PyObject *module, PyObject *func, PyObject *arg);
+
+static PyObject *
+sys__callonearg(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *func;
+    PyObject *arg;
+
+    if (!_PyArg_CheckPositional("_callonearg", nargs, 2, 2)) {
+        goto exit;
+    }
+    func = args[0];
+    arg = args[1];
+    return_value = sys__callonearg_impl(module, func, arg);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(sys__callnoargs__doc__,
+"_callnoargs($module, func, /)\n"
+"--\n"
+"\n"
+"Wrapper.");
+
+#define SYS__CALLNOARGS_METHODDEF    \
+    {"_callnoargs", (PyCFunction)sys__callnoargs, METH_O, sys__callnoargs__doc__},
+
+PyDoc_STRVAR(sys__callnoargs_inline__doc__,
+"_callnoargs_inline($module, func, /)\n"
+"--\n"
+"\n"
+"Wrapper.");
+
+#define SYS__CALLNOARGS_INLINE_METHODDEF    \
+    {"_callnoargs_inline", (PyCFunction)sys__callnoargs_inline, METH_O, sys__callnoargs_inline__doc__},
+
 PyDoc_STRVAR(sys_exit__doc__,
 "exit($module, status=None, /)\n"
 "--\n"
@@ -992,4 +1040,4 @@ sys_getandroidapilevel(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
     #define SYS_GETANDROIDAPILEVEL_METHODDEF
 #endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
-/*[clinic end generated code: output=855fc93b2347710b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9bef63ce3c6ea1c4 input=a9049054013a1b77]*/
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index ae3cbf1954..3f2f4f7890 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -822,6 +822,58 @@ sys_unraisablehook(PyObject *module, PyObject *unraisable)
 }
 
 
+/*[clinic input]
+sys._callonearg
+
+    func: object
+    arg: object
+    /
+
+Wrapper.
+[clinic start generated code]*/
+
+static PyObject *
+sys__callonearg_impl(PyObject *module, PyObject *func, PyObject *arg)
+/*[clinic end generated code: output=7bb11bd7e01787e7 input=ebf68435f76708a1]*/
+{
+    return PyObject_CallOneArg(func, arg);
+}
+
+
+/*[clinic input]
+sys._callnoargs
+
+    func: object
+    /
+
+Wrapper.
+[clinic start generated code]*/
+
+static PyObject *
+sys__callnoargs(PyObject *module, PyObject *func)
+/*[clinic end generated code: output=7312d6d8c815bd50 input=9202122dda810b68]*/
+{
+    return PyObject_CallNoArgs(func);
+}
+
+
+/*[clinic input]
+sys._callnoargs_inline
+
+    func: object
+    /
+
+Wrapper.
+[clinic start generated code]*/
+
+static PyObject *
+sys__callnoargs_inline(PyObject *module, PyObject *func)
+/*[clinic end generated code: output=2d62eda5cc0c2eb7 input=635e078cc6f85d0d]*/
+{
+    return _PyObject_CallNoArgs(func);
+}
+
+
 /*[clinic input]
 sys.exit
 
@@ -2023,6 +2075,9 @@ static PyMethodDef sys_methods[] = {
     SYS_GET_ASYNCGEN_HOOKS_METHODDEF
     SYS_GETANDROIDAPILEVEL_METHODDEF
     SYS_UNRAISABLEHOOK_METHODDEF
+    SYS__CALLONEARG_METHODDEF
+    SYS__CALLNOARGS_METHODDEF
+    SYS__CALLNOARGS_INLINE_METHODDEF
     {NULL,              NULL}           /* sentinel */
 };