你如何在python中列出所有子进程? [英] How do you list all child processes in python?

问题描述

我正在使用启动各种子进程的第三方库.当出现异常时，我想杀死所有子进程.如何获取子 pid 列表?

I'm using a third party library that starts various sub processes. When there's an exception I'd like to kill all the child processes. How can I get a list of child pids?

推荐答案

您不能总是在创建子进程时记录所有子进程，因为它们会反过来创建您不知道的新进程.但是，使用 psutil 查找它们非常简单:

You can't always log all the sub-processes as they are created, since they can in turn create new processes that you are not aware of. However, it's pretty simple to use psutil to find them:

import psutil

current_process = psutil.Process()
children = current_process.children(recursive=True)
for child in children:
    print('Child pid is {}'.format(child.pid))

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