update python to [python 3 on ubuntu code example
Example 1: update ubuntu to python 3.85
sudo apt-get install python3.8Example 2: update ubuntu to python 3.85
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get updatesudo apt-get install python3.8sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update