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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 _verified_iv_length(iv_length, algorithm_suite):
 # type: (int, AlgorithmSuite) -> int """Verify an IV length for an algorithm suite. :param int iv_length: IV length to verify :param AlgorithmSuite algorithm_suite: Algorithm suite to verify against :return: IV length :rtype: int :raises SerializationError: if IV length does not match algorithm suite """

    if iv_length != algorithm_suite.iv_len:
        raise SerializationError(
            "Specified IV length ({length}) does not match algorithm IV length ({algorithm})".format(
                length=iv_length, algorithm=algorithm_suite
            )
        )

    return iv_length