Signal Handler in Python

sample.py

import signal
import time


def sigint_handler(num, frame):
    print("received SIGINT!")


def sigtstp_handler(num, frame):
    print("received SIGTSTP!")


def sigterm_handler(num, frame):
    print("received SIGTERM!")


def work():
    while True:
        time.sleep(1)
        print("this is a signal handler sample!")


def main():
    signal.signal(signal.SIGINT, sigint_handler)
    signal.signal(signal.SIGTSTP, sigtstp_handler)
    signal.signal(signal.SIGTERM, sigterm_handler)
    work()

if __name__ == '__main__':
    main()