BlueDot shutdown on double press

bluedot_shutdown.py

from bluedot import BlueDot
from subprocess import call

# create a function which will be called when then bluedot is double pressed / swiped
def shutdown_pi():
    call("sudo halt", shell=True)
    
# create the blue dot
bd = BlueDot()
# call the shutdown_pi function when its double pressed
bd.when_double_pressed = shutdown_pi
# or when its swiped
bd.when_swiped = shutdown_pi