def test_postprocessor_skip(self):
        def postprocessor(path, key, value):
            if key is not 'b':
                value = int(value)
                if value == 3:
                    return None
            return key, value
        self.assertEqual({'a': {'b': [1, 2]}},
                         parse('<a><b>1</b><b>2</b><b>3</b></a>',
                               postprocessor=postprocessor))
dataset/ETHPy150Open martinblech/xmltodict/tests/test_xmltodict.py/XMLToDictTestCase.test_postprocessor_skip/operator `==` -> `is not`