Remove a tuple unpacking in a parameter list to suppress the SyntaxWarning with

-3.

Lib/threading.py

@@ -151,7 +151,8 @@ class _RLock(_Verbose):
 
     # Internal methods used by condition variables
 
-    def _acquire_restore(self, (count, owner)):
+    def _acquire_restore(self, count_owner):
+        count, owner = count_owner
         self.__block.acquire()
         self.__count = count
         self.__owner = owner