Fix OrderedDict.setdefault() to work for subclasses that define __missing__().
diff --git a/Lib/collections.py b/Lib/collections.py
index 061106b..c69f4ca 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -171,7 +171,6 @@
size += sizeof(self.__root) * n # proxy objects
return size
- setdefault = MutableMapping.setdefault
update = MutableMapping.update
pop = MutableMapping.pop
keys = MutableMapping.keys
@@ -179,6 +178,13 @@
items = MutableMapping.items
__ne__ = MutableMapping.__ne__
+ def setdefault(self, key, default=None):
+ 'OD.setdefault(k[,d]) -> OD.get(k,d), also set OD[k]=d if k not in OD'
+ if key in self:
+ return self[key]
+ self[key] = default
+ return default
+
@_recursive_repr()
def __repr__(self):
'od.__repr__() <==> repr(od)'