use assert[Not]In where appropriate
diff --git a/Lib/test/test_compiler.py b/Lib/test/test_compiler.py
index b54894d..b9033a8 100644
--- a/Lib/test/test_compiler.py
+++ b/Lib/test/test_compiler.py
@@ -87,7 +87,7 @@
 
     def testDocstrings(self):
         c = compiler.compile('"doc"', '<string>', 'exec')
-        self.assertTrue('__doc__' in c.co_names)
+        self.assertIn('__doc__', c.co_names)
         c = compiler.compile('def f():\n "doc"', '<string>', 'exec')
         g = {}
         exec c in g