From d88f0aa8e24ea7562f2e04833f46d8526e846334 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Wed, 20 May 2020 21:21:02 -0700
Subject: [PATCH] bpo-40651: Improve LRU recipe in the OrderedDict
 documentation  (GH-GH-20139) (GH-20167)

---
 Doc/library/collections.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 8dcf9451d72..d4297166597 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -1150,6 +1150,8 @@ variants of :func:`functools.lru_cache`::
             return value
 
         def __setitem__(self, key, value):
+            if key in self:
+                self.move_to_end(key)
             super().__setitem__(key, value)
             if len(self) > self.maxsize:
                 oldest = next(iter(self))