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问题描述
我在使用 pyudev 库时遇到问题.
I have a problem with pyudev library usage.
我想要一个程序来检测 USB 插入并打印一些东西到控制台.这是我的代码:
I want to have a program which detects USB plug in and prints something to console. Here's the code i have:
import glib
import os
import sys
from pyudev import Context, Monitor
from pyudev.glib import GUDevMonitorObserver as MonitorObserver
def device_event(observer, device):
print 'yep'
context = Context()
monitor = Monitor.from_netlink(context)
monitor.filter_by(subsystem='usb')
observer = MonitorObserver(monitor)
observer.connect('device-added', device_event)
monitor.start()
glib.MainLoop().run()
问题是当我运行脚本时，device_event 函数似乎被调用了两次.我插入 USB 设备时得到的输出是:
The problem is when i run the script it seems that device_event function gets called twice.The output i get when i plug in an USB device is:
yep
yep
我找遍了都没有找到答案请帮忙谢谢
I searched all over but could not find an answerPlease helpThank you
推荐答案
您获得设备枚举的事件，然后为每个枚举的接口分离事件.
You get an event for the device enumeration and then separate events for each enumerated interface.
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