假设我想在一个线程中运行一个名为run_forever()的函数,但是按Ctrl C仍然可以让它“停止”.我已经看到了使用threading.Thread的StoppableThread子类进行此操作的方法,但这些似乎将目标函数“复制”到该子类中.我想保持功能“它在哪里”.

请考虑以下示例：

import time
import threading
def run_forever():  # An externally defined function which runs indefinitely
    while True:
        print("Hello,world!")
        time.sleep(1)
class StoppableThread(threading.Thread):
    """Thread class with a stop() method. The thread itself has to check
    regularly for the stopped() condition."""
    def __init__(self,*args,**kwargs):
        super(StoppableThread,self).__init__(*args,**kwargs)
        self._stop = threading.Event()
    def stop(self):
        self._stop.set()
    def stopped(self):
        return self._stop.isSet()
    def run(self):
        while not self.stopped():
            run_forever()             # This doesn't work
            # print("Hello,world!")      # This does
            self._stop.wait(1)
thread = StoppableThread()
thread.start()
time.sleep(5)
thread.stop()

目标函数run_forever本身就是一个永不退出的while循环.但是,为了获得所需的行为,wait()命令必须在while循环中,正如我所理解的那样.

有没有办法在不修改run_forever()函数的情况下实现所需的行为？