src/transformers/pipelines/zero_shot_classification.py/ZeroShotClassificationPipeline/preprocess
class ZeroShotClassificationPipeline:    def preprocess(self, inputs, candidate_labels=None, hypothesis_template="This example is {}."):
        sequence_pairs, sequences = self._args_parser(inputs, candidate_labels, hypothesis_template)
        model_inputs = self._parse_and_tokenize(sequence_pairs)

        prepared_inputs = {
            "candidate_labels": candidate_labels,
            "sequences": sequences,
            "inputs": model_inputs,
        }
        return prepared_inputs