无需尝试即可在Python中捕获键盘中断 [英] Capture keyboardinterrupt in Python without try-except

问题描述

Python中是否有某种方法可以捕获KeyboardInterrupt事件而不将所有代码放入try-except语句中?

Is there some way in Python to capture KeyboardInterrupt event without putting all the code inside a try-except statement?

如果用户按下 Ctrl + C ，我想干净地退出而没有任何痕迹.

I want to cleanly exit without trace if user presses Ctrl+C.

推荐答案

是的，您可以使用模块信号，并使用 threading.Event :

Yes, you can install an interrupt handler using the module signal, and wait forever using a threading.Event:

import signal
import sys
import time
import threading

def signal_handler(signal, frame):
    print('You pressed Ctrl+C!')
    sys.exit(0)

signal.signal(signal.SIGINT, signal_handler)
print('Press Ctrl+C')
forever = threading.Event()
forever.wait()

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