参考:http://www.voidcn.com/article/p-pmlncsni-bvo.html
按下Ctrl C时,我的while循环不会退出.它似乎忽略了我的KeyboardInterrupt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
同样,我不确定问题是什么,但我的终端甚至从未打印过我的异常中的两个打印警报.有人能帮我解决这个问题吗?
用raise语句替换break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
except块中的两个print语句应该以'(再次)’出现的第二个执行.