Use the signal
module to handle SIGINT
:
import signal
from tornado.ioloop import IOLoop
def on_shutdown():
print('Shutting down')
IOLoop.instance().stop()
if __name__ == '__main__':
ioloop = IOLoop.instance()
signal.signal(signal.SIGINT, lambda sig, frame: ioloop.add_callback_from_signal(on_shutdown))
ioloop.start()