How to get alert for shutdown of python process/abrupt termination?

Question

我们如何在python进程内连接代码，以便在进程关闭/突然终止的情况下发送警报？

Answer 1

使用主管守护程序

Answer 2

It's not clear what exactly you mean. Shutdown/abort of the process itself? Or of a child process?

• Shutdown/abort of a process itself: Have a look at Pythons atexit module ; here you can register a callback for when your program cleanly exits. But there is absolutely no way for you to catch all circumstances, if your program fails b/oa serious issue (eg segfault) your atexit handlers will never get called. You need a supervising process to catch absolutely all aborts.
• Shutdown/abort of a child process: If you eg use the subprocess module you can simply call poll() or wait() on popen objects to see if the spawned process is dead / wait for them to die. For a more advanced implementation use Pythons signal module to set a handler for SIGCHLD - this signal is sent to your process whenever one of the child processes terminates.