1 files changed, 16 insertions, 3 deletions
diff --git a/Objects/clinic/tupleobject.c.h b/Objects/clinic/tupleobject.c.h
index 67d9f34..0096f0c 100644
--- a/Objects/clinic/tupleobject.c.h
+++ b/Objects/clinic/tupleobject.c.h
@@ -25,10 +25,23 @@ tuple_index(PyTupleObject *self, PyObject *const *args, Py_ssize_t nargs)
     Py_ssize_t start = 0;
     Py_ssize_t stop = PY_SSIZE_T_MAX;
 
-    if (!_PyArg_ParseStack(args, nargs, "O|O&O&:index",
-        &value, _PyEval_SliceIndexNotNone, &start, _PyEval_SliceIndexNotNone, &stop)) {
+    if (!_PyArg_CheckPositional("index", nargs, 1, 3)) {
         goto exit;
     }
+    value = args[0];
+    if (nargs < 2) {
+        goto skip_optional;
+    }
+    if (!_PyEval_SliceIndexNotNone(args[1], &start)) {
+        goto exit;
+    }
+    if (nargs < 3) {
+        goto skip_optional;
+    }
+    if (!_PyEval_SliceIndexNotNone(args[2], &stop)) {
+        goto exit;
+    }
+skip_optional:
     return_value = tuple_index_impl(self, value, start, stop);
 
 exit:
@@ -95,4 +108,4 @@ tuple___getnewargs__(PyTupleObject *self, PyObject *Py_UNUSED(ignored))
 {
     return tuple___getnewargs___impl(self);
 }
-/*[clinic end generated code: output=0a6ebd2d16b09c5d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5312868473a41cfe input=a9049054013a1b77]*/