Bluetooth switcher in PyQt 5.5

bluetooth_switcher.py

'''
I've installed a new wifi card on my laptop with bluetooth support, 
but there is no shortcut in my keyboard to swtich on/off bluetooth.
This script + custom shortcut with your linux DE (or other) work perfectly
'''

from PyQt5.QtCore import QCoreApplication
from PyQt5.QtBluetooth import QBluetoothLocalDevice

if __name__ == '__main__':
    app = QCoreApplication(sys.argv)

    local_device = QBluetoothLocalDevice()

    if local_device.isValid():
        is_off = local_device.hostMode() == QBluetoothLocalDevice.HostPoweredOff or False

        if is_off:
            local_device.powerOn()
        else:
            local_device.setHostMode(QBluetoothLocalDevice.HostPoweredOff)

    app.exit()