test_bre.py 文件源码

def test_subn(self):
        """Test that `subn` works."""

        self.assertEqual(
            bre.subn(r'tset', 'test', r'This is a tset for subn! This is a tset for subn!'),
            ('This is a test for subn! This is a test for subn!', 2)
        )