commit 5ded795a72d6de03066ee5975c85501612d11d8f
author Raymond Hettinger <python@rcn.com> Sat Mar 23 05:27:51 2013 -0700
committer Raymond Hettinger <python@rcn.com> Sat Mar 23 05:27:51 2013 -0700
tree eb9b8bcfab05578e2b5ae7308168f0d79cf149ba
parent bb2dad8915a864503e3f81657f41500f0a49d987

Hold key reference until the links have updated.

Lib/collections.py

diff --git a/Lib/collections.py b/Lib/collections.py
index a092241..faf677b 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -66,7 +66,7 @@
         # Deleting an existing item uses self.__map to find the link which gets
         # removed by updating the links in the predecessor and successor nodes.
         dict_delitem(self, key)
-        link_prev, link_next, key = self.__map.pop(key)
+        link_prev, link_next, _ = self.__map.pop(key)
         link_prev[1] = link_next                        # update link_prev[NEXT]
         link_next[0] = link_prev                        # update link_next[PREV]