convert old fail* assertions to assert*
diff --git a/Lib/test/test_pep3120.py b/Lib/test/test_pep3120.py
index 81d15bc..85da048 100644
--- a/Lib/test/test_pep3120.py
+++ b/Lib/test/test_pep3120.py
@@ -19,7 +19,7 @@
         try:
             import test.badsyntax_pep3120
         except SyntaxError as msg:
-            self.assert_(str(msg).find("Non-UTF-8 code starting with") >= 0)
+            self.assertTrue(str(msg).find("Non-UTF-8 code starting with") >= 0)
         else:
             self.fail("expected exception didn't occur")