模块对象在代码重新启动之前不会更新

问题描述

不太确定如何提问，所以我正在尝试打印插入驱动器的卷.

Not quite sure how to ask this, so I am trying to print plugged drives' volumes.

这是我的代码的简化版本:

Here is a simplified version of my code:

from gi.repository import Gio
from time import sleep
import importlib
import os



def check():
    importlib.reload(Gio)
    vm = Gio.VolumeMonitor.get()
    volumes = vm.get_volumes()
    print("Volumes: {}".format([i.get_name() for i in volumes]))
    sleep(2)


while True:
    check()

所以这段代码打印出插入的驱动器的卷.直到现在都没问题，但是，当我插入新设备或拔下当前设备时，列表不会更新.它不会检测更改.

So this code prints out plugged drives' volumes. No problem until now, however, when I plug a new device or unplug the current one, the list won't update. It does not detect the changes.

我试过了；

• 重新导入 Gio 模块

• re importing Gio module

删除导入的模块并重新导入

deleting the imported module and re importing it

从其他python文件调用函数

calling the function from other python file

我想最终用这段代码做一个服务.我相信我可以使用 cron 来完成这项工作，但是，我正在努力使其作为一项服务工作.

I would like to make a service out of this code in the end. I believe I could make this work with cron, however, I am trying to make it work as a service.

我的服务文件:

[Unit]
Description=Usbmount service
StartLimitIntervalSec=0


[Service]
Type=simple
Restart=always
RestartSec=5
User=abc
ExecStart=/usr/bin/python3 /abc/myuser/usbmount.py
ExecStop=/usr/bin/python3 /abc/myuser/usbmount.py

[Install]
WantedBy=multi-user.target

关于如何解决这个问题有什么想法吗?

Any ideas about how to solve this?

谢谢

推荐答案

添加:

os.execv("path/to/file", sys.argv)

成功了，脚本使用不同的 PID 重新运行，因此检测到更新的结果并打印出来.

does the trick, the script re-runs with a different PID, therefore updated results are detected and printed out.

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