使用os.kill将SIGINT发送到Python子进程,就像按下Ctrl C一样

我刚刚添加了处理程序来检查信号是否正在被处理. I used the idea from this question

目标是捕获KeyboardInterrupt(SIGINT),并释放资源.但是,如果SIGINT不是来自键盘,似乎不会抛出异常.这就是为什么我创建了一个处理程序,但该进程似乎根本不运行处理程序…

import multiprocessing
import time
import signal
import signal
import os
import sys

def handler(signal,frame):
    print("handler!!!")
    sys.exit(10)

def worker(): 
    p = multiprocessing.current_process()
    try:
        signal.signal(signal.SIGINT,handler)  
        print("[PID:{}] acquiring resources".format(p.pid))
        while(True):           
            #working...
            time.sleep(0.5)
    except (KeyboardInterrupt,SystemExit):
        pass
    finally:
        print("[PID:{}] releasing resources".format(p.pid))

if __name__ == "__main__":
    lst = []
    for i in range(1):
        p = multiprocessing.Process(target=worker)
        p.start()
        lst.append(p)

    time.sleep(3)      
    for p in lst:        
        os.kill(p.pid,signal.SIGINT)
        p.join()
        print(p)
        print(p.exitcode)
    print("joined all processes")

以下是输出示例：

C:UsersRui>python test.py
[PID:16524] acquiring resources
<Process(Process-1,stopped[2])>
2
joined all processes

>我做错了什么？
>我应该使用子进程模块吗？
>我可以尝试其他哪些方法来中断流程执行？