def test_keys(self):
        k = self.db.keys()
        k.sort()
        assert k == ['annot1', 'annot2'], k
Volume level of the media player (0..1).
dataset/ETHPy150Open cjlee112/pygr/tests/annotation_test.py/AnnotationDB_Test.test_keys--crossover with--dataset/ETHPy150Open home-assistant/home-assistant/homeassistant/components/media_player/panasonic_viera.py/PanasonicVieraTVDevice.volume_level