From fdb21609d944941f0732df72dc3d07a7a9a7efea Mon Sep 17 00:00:00 2001 From: "Miss Islington (bot)" <31488909+miss-islington@users.noreply.github.com> Date: Wed, 22 Jan 2020 10:11:22 -0800 Subject: bpo-39425: Fix list.count performance regression (GH-18119) (GH-18120) https://bugs.python.org/issue39425 Automerge-Triggered-By: @pablogsal (cherry picked from commit 14d80d0b605d8b148e14458e4c1853a940071462) Co-authored-by: Dong-hee Na Co-authored-by: Dong-hee Na --- Objects/listobject.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Objects/listobject.c b/Objects/listobject.c index d506c08..73afc44 100644 --- a/Objects/listobject.c +++ b/Objects/listobject.c @@ -2586,6 +2586,10 @@ list_count(PyListObject *self, PyObject *value) for (i = 0; i < Py_SIZE(self); i++) { PyObject *obj = self->ob_item[i]; + if (obj == value) { + count++; + continue; + } Py_INCREF(obj); int cmp = PyObject_RichCompareBool(obj, value, Py_EQ); Py_DECREF(obj); -- cgit v0.12