Ubuntu 18.04 System Python 3 Upgrade

Hongwei Li

Last updated on Jul 21, 2020 Linux, System

Symptom

After the upgrade from Python 3.6 to Python 3.8:

Ubuntu Software Center not working
Can’t start terminal by Ctl+Alt+t
Can’t start terminal or software
Error Message - A problem occured when checking for the updates

Root cause

After the Python 3 upgrade, I changed the Update-alternatives configuration. Fortunately I remembered it!

Solution

Start terminal in right click menu and change back to the original configuration of update-alternatives, as below:

update-alternatives-config

Linux Update-alternatives Python 3