VScode, Python 如何多线程 debug 代码

        .........
        self._process = subprocess.Popen(
            exec_cmd, universal_newlines=True, startupinfo=startupinfo
        )
        self.started = True
        
        exec_cmd='path_to/activitywatch/venv/bin/aw-watcher-window'

VScode 中 debug 的时候，subprocess.Popen执行完了，到下一句，都没有断在 aw-watcher-window 的main中，断点肯定是打了的 不知道如何才能在 VScode 中 debug 这种多线程的 python 代码

launch.json 配置

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: Current File",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "console": "integratedTerminal",
            "subProcess": true,
            "justMyCode": true
        },
        {
            "name": "MySubProcess",
            "type": "python",
            "request": "attach",
            "processId":"${command:pickProcess}",
            "justMyCode": true
        }
    ]
}