gi 存储库问题

Question

当我尝试运行时，software-center我收到此消息

Traceback (most recent call last):
File "/usr/bin/software-center", line 25, in <module>
    from gi.repository import Gtk, GObject
ImportError: No module named repository

但是我安装gi了

apt-get install python3-gi 

但它说：python3-gi is already the newest version.