This tutorial is specific to those people whose Linux distribution didn’t come with Python installed or came with an earlier version of Python 2 like 2.7 or maybe an earlier version of Python 3.
1. Check if Python is already installed
$ python --version
$ python3 --version
2. If your Linux distribution has Python 2 and doesn’t have Python 3 installed, install python with your package manager. The commands may vary for different flavors.
For Ubuntu :
$ sudo apt-get update $ sudo apt-get install python3
For CentOS :
$ sudo yum update $ sudo yum install yum-utils
$ sudo yum install python3
Note that if you want to install any specific version of Python, instead of running
$ sudo apt-get install python3, use
$ sudo apt-get install python3.8 or whichever version you want to install.