install python 3.6 on ubuntu code example

Example 1: ubuntu install python

# first do:
sudo apt-get update
# after do:
sudo apt-get install python3.6
# then it should be installed

Example 2: how to install python 3 on ubuntu 20.04

sudo apt install build-essential libssl-dev libffi-dev python3-dev

Example 3: how to install python 3 on ubuntu 20.04

OutputPython 3.8.2