def pack(pid, data_type=None):
    return struct.pack("<HHHxx", pid, 0 if data_type is None else 2, data_type or 0)
Return fingerprints for all keys
dataset/ETHPy150Open braiden/python-ant-downloader/antd/garmin.py/pack--crossover with--dataset/ETHPy150Open saltstack/salt/salt/key.py/Key.finger_all