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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 encode(cls, value):
 """ encode the dict as a json string to be written into redis. :param value: dict :return: bytes """

        try:
            coerced = dict(value)
            if coerced == value:
                return json.dumps(coerced).encode(cls._encoding)
        except (TypeError, ValueError):
            pass
        raise InvalidValue('not a dict')