MutableDict.__delitem__ should require only 'key' argument

diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py
index ca44a9ebfe65277f7c9d81c02053381145e6abdd..b1b851f7231c2229c1d1bfe333d511fd62e0cd05 100644 (file)
--- a/lib/sqlalchemy/ext/mutable.py
+++ b/lib/sqlalchemy/ext/mutable.py
@@ -611,9 +611,9 @@ class MutableDict(Mutable, dict):
         dict.__setitem__(self, key, value)
         self.changed()
 
-    def __delitem__(self, key, value):
+    def __delitem__(self, key):
         """Detect dictionary del events and emit change events."""
-        dict.__delitem__(self, key, value)
+        dict.__delitem__(self, key)
         self.changed()
 
     @classmethod