I have found a solution for python3-xlib lost! And I have installed youdaodict on my Debian Jessie! https://github.com/LiuLang/python3-xlib This repo is the source code of python3-xlib! https://github.com/LiuLang/kwplayer-packages This repo has the deb package of python3-xlib! Thank you all guys! mudongliang