how to update python on linux code example

Example 1: how to update pip python

python -m pip install --upgrade pip

Example 2: ubuntu install python

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

Example 3: update python ubuntu

sudo apt-get update && sudo apt-get upgrade
sudo apt-get install python3.7

Example 4: update python ubuntu

$ sudo apt update -y
$ sudo apt install python3.7