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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unique_scene_labels(scene_list):
 """Find the unique scene labels Parameters scene_list : list, shape=(n,) A list containing scene dicts Returns ------- labels: list, shape=(n,) Unique labels in alphabetical order """

    if isinstance(scene_list, dcase_util.containers.MetaDataContainer):
        return scene_list.unique_scene_labels

    else:
        labels = []
        for item in scene_list:
            if 'scene_label' in item and item['scene_label'] not in labels:
                labels.append(item['scene_label'])

        labels.sort()
        return labels