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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 from_dict(d):
 """ Recreate a KrausModel from the dictionary representation. :param dict d: The dictionary representing the KrausModel. See `to_dict` for an example. :return: The deserialized KrausModel. :rtype: KrausModel """

        kraus_ops = [KrausModel.unpack_kraus_matrix(k) for k in d['kraus_ops']]
        return KrausModel(d['gate'], d['params'], d['targets'], kraus_ops, d['fidelity'])