def __init__(self, otp, translate_otp=True):
        if translate_otp:
            self.otp = self.get_otp_modehex_interpretation(otp)
        else:
            self.otp = otp

        self.device_id = self.otp[:12]
        self.session_counter = None
        self.timestamp = None
        self.session_user = None
Calculates a Mann-Whitney U statistic on the provided scores and
dataset/ETHPy150Open Kami/python-yubico-client/yubico_client/otp.py/OTP.__init__--crossover with--dataset/ETHPy150Open radlab/sparrow/src/main/python/third_party/stats.py/amannwhitneyu