def maybe_list(l, scalars=(Mapping, string_t)):
    return l if l is None or is_list(l, scalars) else [l]
Initialize the BLE provider.  Must be called once before any other
dataset/ETHPy150Open celery/kombu/kombu/utils/functional.py/maybe_list--crossover with--dataset/ETHPy150Open adafruit/Adafruit_Python_BluefruitLE/Adafruit_BluefruitLE/corebluetooth/provider.py/CoreBluetoothProvider.initialize