bpo-40651: Improve LRU recipe in the OrderedDict documentation (GH-#2…

…0139)
python · May 18, 2020 · bb8635c · bb8635c
1 parent 3a855b2
commit bb8635c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
@@ -1161,6 +1161,8 @@ 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))