change sync helper to be py26 friendly

bdkearns · bdkearns · commit 408deeca0db7 · 2014-10-23T03:18:52.000-04:00
diff --git a/java2python/mod/include/sync.py b/java2python/mod/include/sync.py
@@ -5,7 +5,7 @@ def lock_for_object(obj, locks={}):
     return locks.setdefault(id(obj), RLock())
 
 def synchronized(call):
-    assert call.__code__.co_varnames[0] in {'self', 'cls'}
+    assert call.__code__.co_varnames[0] in ['self', 'cls']
     @wraps(call)
     def inner(*args, **kwds):
         with lock_for_object(args[0]):
