Python 3.9 is the latest major release of the Python language. It includes many new features such as new dict operators, new str functions, support for IANA time zone, and many more

In this article, we’ll show you two ways to install Python 3.9 on Ubuntu 20.04.  with Apt

 

Step 1: Update and Refresh Repository Lists

To make sure that our versions are up-to-date, open a terminal window, and enter the following:

 

Step 2: Install Supporting Software

The software-properties-common package gives you better control over your package manager by letting you add PPA (Personal Package Archive) repositories. Install the supporting software with the command:

 

Step 3: Add the deadsnakes PPA  to your system’s sources list:

When prompted, press [Enter] to continue.

then refresh the package list again

 

Step 4: Install Python 3.9

you can install Python 3.9 by executing the following command

 

Step 5: Verify the installation

Verify that the installation was successful by typing:

OR 

 

 

That’s it. Python 3.9 is installed on your Ubuntu, and you can start using it.