From 906f95e80bfdd801470cf8225ff9e6f99cd98187 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Mon, 23 Mar 2009 04:42:18 +0000
Subject: [PATCH] Move initialization of root link to __init__.

---
 Lib/collections.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/collections.py b/Lib/collections.py
index 2c2355ee1e..f0f1fbbe29 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -41,11 +41,12 @@ class OrderedDict(dict, MutableMapping):
         try:
             self.__root
         except AttributeError:
+            self.__root = _Link()       # sentinel node for the doubly linked list
             self.clear()
         self.update(*args, **kwds)
 
     def clear(self):
-        self.__root = root = _Link()    # sentinel node for the doubly linked list
+        root = self.__root
         root.prev = root.next = root
         self.__map = {}
         dict.clear(self)
-- 
2.50.1