python退出带KeyboardInterrupt异常的无限while循环

Question

按下Ctrl+C时，My while循环不退出。它似乎忽略了我的键盘中断异常。循环部分如下所示：

while True:
  try:
    if subprocess_cnt <= max_subprocess:
      try:
        notifier.process_events()
        if notifier.check_events():
          notifier.read_events()
      except keyboardInterrupt:
        notifier.stop()
        break
    else:
      pass
  except (KeyboardInterrupt, SystemExit):
    print '\nkeyboardinterrupt found!'
    print '\n...Program Stopped Manually!'
    raise

再说一次，我不知道问题出在哪里，但我的终端甚至从来没有打印我的两个打印警告，我在我的例外。有人能帮我解决这个问题吗？

Answer 1

将break语句替换为raise语句，如下所示：

while True:
  try:
    if subprocess_cnt <= max_subprocess:
      try:
        notifier.process_events()
        if notifier.check_events():
          notifier.read_events()
      except KeyboardInterrupt:
        notifier.stop()
        print 'KeyboardInterrupt caught'
        raise  # the exception is re-raised to be caught by the outer try block
    else:
      pass
  except (KeyboardInterrupt, SystemExit):
    print '\nkeyboardinterrupt caught (again)'
    print '\n...Program Stopped Manually!'
    raise

执行except块中的两个print语句时，第二个出现“（again）”。