import gi

gi.require_version('Gtk', '3.0')

from gi.repository import Gtk

class SwitcherWindow(Gtk.Window):

def __init__(self):

Gtk.Window.__init__(self, title="Switch Demo")

self.set_border_width(10)

hbox = Gtk.Box(spacing=6)

self.add(hbox)

switch = Gtk.Switch()

switch.connect("notify::active", self.on_switch_activated)

switch.set_active(False)

hbox.pack_start(switch, True, True, 0)

switch = Gtk.Switch()

switch.connect("notify::active", self.on_switch_activated)

switch.set_active(True)

hbox.pack_start(switch, True, True, 0)

def on_switch_activated(self, switch, gparam):

if switch.get_active():

state = "on"

else:

state = "off"

print("Switch was turned", state)

win = SwitcherWindow()

win.connect("delete-event", Gtk.main_quit)

win.show_all()

Gtk.main()