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How to use the mashumaro.DataClassJSONMixin function in mashumaro

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Fatal1ty / mashumaro / tests / test_json.py View on Github

def test_from_json_with_decoder_params():
    @dataclass
    class DataClass(DataClassJSONMixin):
        x: List[float]

    def multiple_by_ten(s):
        return int(s) * 10

    instance = DataClass(x=[10, 20, 30])
    dumped = json.dumps({'x': [1, 2, 3]})
    assert DataClass.from_json(dumped, parse_int=multiple_by_ten) == instance
    assert DataClass.from_json(dumped) != instance