如何在python3中停止来自其他线程的input()？

import signal
import threading

def signal_handler(signum, frame):
    raise KeyboardInterrupt

def main():
    # 设置信号处理器
    signal.signal(signal.SIGINT, signal_handler)

    # 创建子线程执行input()函数
    thread = threading.Thread(target=input_thread)
    thread.start()

    # 主线程继续执行其他任务
    print("Main thread is running...")

    # 等待子线程结束
    thread.join()

def input_thread():
    try:
        # 在子线程中执行input()函数
        user_input = input("Enter something: ")
        print("You entered:", user_input)
    except KeyboardInterrupt:
        print("Input interrupted")

if __name__ == "__main__":
    main()