Preparing for OS upgrade

[jehoshua]

I need to upgrade the current Kubuntu version 16.04.6 LTS to the latest version because there are some issues with the Python version at present. I feel it can only be resolved by upgrading the OS.

In the preparation for that, do I just use pip to list all the installed packages, write that to a file, and then use that as a basis for re-installing Python packages again.