Cannot import name '_gi'

Question

I\'m trying to add a repository to ppa with the add-apt-repository commands but the _gi module from Python is not found.

I did this command

Answer 1

Ubuntu does not like to switch its default interpreter away from python 3.7.

So switch it back to 3.6 by using

sudo update-alternatives --config python3

After that try to install the gi package:

sudo apt install python3-gi