1 files changed, 3 insertions, 3 deletions
diff --git a/Objects/listobject.c b/Objects/listobject.c
index 19967ca..eee7c68 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2324,7 +2324,7 @@ list_sizeof(PyListObject *self)
 {
     Py_ssize_t res;
 
-    res = sizeof(PyListObject) + self->allocated * sizeof(void*);
+    res = _PyObject_SIZE(Py_TYPE(self)) + self->allocated * sizeof(void*);
     return PyLong_FromSsize_t(res);
 }
 
@@ -2447,7 +2447,7 @@ list_subscript(PyListObject* self, PyObject* item)
     }
     else {
         PyErr_Format(PyExc_TypeError,
-                     "list indices must be integers, not %.200s",
+                     "list indices must be integers or slices, not %.200s",
                      item->ob_type->tp_name);
         return NULL;
     }
@@ -2611,7 +2611,7 @@ list_ass_subscript(PyListObject* self, PyObject* item, PyObject* value)
     }
     else {
         PyErr_Format(PyExc_TypeError,
-                     "list indices must be integers, not %.200s",
+                     "list indices must be integers or slices, not %.200s",
                      item->ob_type->tp_name);
         return -1;
     }