The default argument in dict.setdefault() defaults to None.
Add this default to weakref.WeakValueDictionary.setdefault()
and weakref.WeakKeyDictionary.setdefault() too.
diff --git a/Lib/weakref.py b/Lib/weakref.py
index 5c66186..510cd7c 100644
--- a/Lib/weakref.py
+++ b/Lib/weakref.py
@@ -113,7 +113,7 @@
else:
return o
- def setdefault(self, key, default):
+ def setdefault(self, key, default=None):
try:
wr = self.data[key]
except KeyError:
@@ -241,7 +241,7 @@
def pop(self, key, *args):
return self.data.pop(ref(key), *args)
- def setdefault(self, key, default):
+ def setdefault(self, key, default=None):
return self.data.setdefault(ref(key, self._remove),default)
def update(self, dict=None, **kwargs):