import sys
import signal
import os
import pwd

class Killer:
    kill_now = False

    def __init__(self):
        signal.signal(signal.SIGINT, self.exit_g)
        signal.signal(signal.SIGTERM, self.exit_g)

    def exit_g(self, signal, frame):
        self.kill_now = True

if __name__ == "__main__":

    killer = Killer()

    while True:
        #тут копирование
        if killer.kill_now:
            exit()


    print("end program")