adjust test compile

Author: WolframAlph

Lib/test/test_compile.py

@@ -798,7 +798,7 @@ def check_same_constant(const):
         f3 = lambda x: x in {("not a name",)}
         self.assertIs(f1.__code__.co_consts[0],
                       f2.__code__.co_consts[0][0])
-        self.assertIs(next(iter(f3.__code__.co_consts[0])),
+        self.assertIs(next(iter(f3.__code__.co_consts[1])),
                       f2.__code__.co_consts[0])
 
         # {0} is converted to a constant frozenset({0}) by the peephole