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authorDong-hee Na <donghee.na92@gmail.com>2020-01-23 02:36:54 +0900
committerMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>2020-01-22 09:36:54 -0800
commit14d80d0b605d8b148e14458e4c1853a940071462 (patch)
tree33744b05eb3ab98d8c74a25c998173aad5cc27ee /Objects
parent5bbac8cbdf140ebce446ea4e7db2b20a5d7b8402 (diff)
downloadcpython-git-14d80d0b605d8b148e14458e4c1853a940071462.tar.gz
bpo-39425: Fix list.count performance regression (GH-18119)
https://bugs.python.org/issue39425 Automerge-Triggered-By: @pablogsal
Diffstat (limited to 'Objects')
-rw-r--r--Objects/listobject.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/Objects/listobject.c b/Objects/listobject.c
index bc8425cae6..a4e90dbf90 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2584,6 +2584,10 @@ 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);