Let library modules use the new keyword arguments for list.sort().
diff --git a/Lib/UserList.py b/Lib/UserList.py
index dd1b927..072f6a7 100644
--- a/Lib/UserList.py
+++ b/Lib/UserList.py
@@ -77,7 +77,7 @@
     def count(self, item): return self.data.count(item)
     def index(self, item, *args): return self.data.index(item, *args)
     def reverse(self): self.data.reverse()
-    def sort(self, *args): self.data.sort(*args)
+    def sort(self, *args, **kwds): self.data.sort(*args, **kwds)
     def extend(self, other):
         if isinstance(other, UserList):
             self.data.extend(other.data)