commit 145bf269df3530176f6ebeab1324890ef7070bf8
author Brandt Bucher <brandtbucher@gmail.com> Fri Feb 26 14:51:55 2021 -0800
committer GitHub <noreply@github.com> Fri Feb 26 14:51:55 2021 -0800
tree 4c4928d6250785372171a52be0b7269aa444511b
parent cc02b4f2e810ab524d845daa18bc94df5b092dd8

bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917)

Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Talin <viridia@gmail.com>
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>

Objects/tupleobject.c

diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index becdf70..89c393c 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -917,7 +917,8 @@ PyTypeObject PyTuple_Type = {
     0,                                          /* tp_setattro */
     0,                                          /* tp_as_buffer */
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-        Py_TPFLAGS_BASETYPE | Py_TPFLAGS_TUPLE_SUBCLASS, /* tp_flags */
+        Py_TPFLAGS_BASETYPE | Py_TPFLAGS_TUPLE_SUBCLASS |
+        _Py_TPFLAGS_MATCH_SELF,               /* tp_flags */
     tuple_new__doc__,                           /* tp_doc */
     (traverseproc)tupletraverse,                /* tp_traverse */
     0,                                          /* tp_clear */