Re-weakened accidentally too-strong weak oracle.

test_create_movie.py

@@ -23,7 +23,7 @@ class TestCreateMovie(TestCase):
         movie_database.ensure_tables_exist()
         session = movie_database.create_session()
         MoviesApp._create_movie(session, 'Example', 4000000, 290000000)
-        actual = session.query(Movie).filter(Movie.title == 'Example').one()
+        actual = session.query(Movie).filter(Movie.title == 'Example').first()
         self.assertIsNotNone(actual)  # less-weak oracle (but still weak)
 
     def test_create_movie_inserts_one_movie(self):