如何知道pynput监听器何时停止？

from pynput import keyboard

def on_press(key):
    # 处理按键按下事件
    pass

def on_release(key):
    # 处理按键释放事件
    if key == keyboard.Key.esc:
        # 停止监听器
        raise keyboard.Listener.StopException

try:
    with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
        listener.join()
except keyboard.Listener.StopException:
    # 监听器停止时执行的操作
    print("监听器已停止")

from pynput import keyboard
import threading

stop_event = threading.Event()

def on_press(key):
    # 处理按键按下事件
    pass

def on_release(key):
    # 处理按键释放事件
    if key == keyboard.Key.esc:
        # 设置事件标志为True，停止监听器
        stop_event.set()

with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
    listener.join()

# 监听器停止后执行的操作
if stop_event.is_set():
    print("监听器已停止")