test_compat.py 文件源码

def test_all_present(self):
        import youtube_dl.compat
        all_names = youtube_dl.compat.__all__
        present_names = set(filter(
            lambda c: '_' in c and not c.startswith('_'),
            dir(youtube_dl.compat))) - set(['unicode_literals'])
        self.assertEqual(all_names, sorted(present_names))