interrupt.py

import itertools
import signal
import _thread
import threading


def noop_handler(signum, frame):
    print("sig", signum)


def set_interrupts(signum):
    while True:
        signal.raise_signal(signum)


def cycle_handlers(signum):
    for handler in itertools.cycle([noop_handler,
                                    signal.SIG_IGN]):
        signal.signal(signum, handler)


def main():
    signum = signal.SIGINT
    signal.signal(signum, noop_handler)
    t = threading.Thread(target=set_interrupts, args=(signum,), daemon=True)
    t.start()
    cycle_handlers(signum)


main()