downgrade python ubuntu code example
Example 1: downgrade python 3.8 to 3.7 ubuntu
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.7
Example 2: update python ubuntu
sudo apt-get update && sudo apt-get upgrade
sudo apt-get install python3.7
Example 3: update python ubuntu
$ sudo apt update -y
$ sudo apt install python3.7