revert 65897
diff --git a/Lib/symtable.py b/Lib/symtable.py
index 9387a67..0d73870 100644
--- a/Lib/symtable.py
+++ b/Lib/symtable.py
@@ -128,8 +128,8 @@
     __globals = None
 
     def __idents_matching(self, test_func):
-        return frozenset(ident for ident in self.get_identifiers()
-                         if test_func(self._table.symbols[ident]))
+        return tuple([ident for ident in self.get_identifiers()
+                      if test_func(self._table.symbols[ident])])
 
     def get_parameters(self):
         if self.__params is None:
@@ -164,7 +164,7 @@
             d = {}
             for st in self._table.children:
                 d[st.name] = 1
-            self.__methods = frozenset(d)
+            self.__methods = tuple(d)
         return self.__methods