问无法使用Ctrl C命令在Python脚本中终止Greenlet

EN

# signal handler to process after catch ctrl+c command
def signal_handler(signum, frame):
    print("Inside Signal Handler")
    gevent.sleep(10)
    print("Signal Handler After sleep")
    gevent.joinall(maingreenlet)
    gevent.killall(maingreenlet,block=True,timeout=10)
    gevent.kill(block=True)
    sys.exit(0)

def main():
 signal.signal(signal.SIGINT, signal_handler) // Catching Ctrl+C

 try:
   maingreenlet = [] // Creating a list of greenlets
   while True:
    for key,profileval in profile.items():
      maingreenlet.append(gevent.spawn(key,profileval)) # appending all grrenlets to list
      gevent.sleep(0)
  except (Error) as e:
    log.exception(e)
    raise

if __name__ == "__main__":
    main()