bpo-40651: Improve LRU recipe in the OrderedDict documentation (GH-GH-20139) (GH-20167)

2020-05-20 21:21:02 -07:00 · 2020-05-20 21:21:02 -07:00 · d88f0aa8e2
parent a59fc9160d
commit d88f0aa8e2
1 changed files with 2 additions and 0 deletions
--- 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))