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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 match_examples(self, parse_fn, examples):
 """ Given a parser instance and a dictionary mapping some label with some malformed syntax examples, it'll return the label for the example that bests matches the current error. """

        assert self.state is not None, "Not supported for this exception"

        candidate = None
        for label, example in examples.items():
            assert not isinstance(example, STRING_TYPE)

            for malformed in example:
                try:
                    parse_fn(malformed)
                except UnexpectedInput as ut:
                    if ut.state == self.state:
                        try:
                            if ut.token == self.token:  # Try exact match first
                                return label
                        except AttributeError:
                            pass
                        if not candidate:
                            candidate = label

        return candidate