Install Python 3.x or 2.7 on Debian 11 Bullseye LinuxĦ Best Ubuntu Linux Alternatives for Beginners to use in 2022 To remove PPA: sudo add-apt-repository -remove ppa:deadsnakes/ppaĥ Redhat enterprise-based alternatives for CentOS 8 In the same way for 3.8: sudo apt remove -purge python3.8 Those who don’t want to the installed python version on the system and also want to remove the PPA if doesn’t require any more, use the given commands. When you check the version of Python this time, you will have 3.9. For example, here Python3.9 is at number 3, hence we type that and Enter key. Enter the Selection number of the Python you want to set as the system’s default one. This time you will see several options including Python 3.9 and 3.8. Switch the default Python version sudo update-alternatives -config python sudo update-alternatives -install /usr/bin/python python /usr/bin/python3.10 1 sudo update-alternatives -install /usr/bin/python python /usr/bin/python3.9 2 sudo update-alternatives -install /usr/bin/python python /usr/bin/python3.8 3 Here we are setting up two versions as alternatives, later we will be able to choose between them to set one of them as the system default one. Then it means there are no alternatives that have been configured, hence let’s do some. “update-alternatives: error: no alternatives for python” For that run: sudo update-alternatives -list python To know whether any version is configured as python alternatives or not. For example, you have the latest version of Python 3.10 (was while doing this article) and also have installed python 3.9 and 3.8 now to set any of them are system’s default use Update-alternatives command:Ĭheck what python versions are available on your systems: ls /usr/bin/python* If you have installed multiple versions of Python and want to set any of them as the default version of the system then that can be possible as well. In the same way, we can install Python other versions such as 3.7, 3.6, and more… The way we have installed version 3.9 using the PPA, we can go for the 3.8 as well. Well, once you have confirmed the version you want of Python is available to install using the added repository, next use the given command syntax to install it.įor example, you want to install version 3.9 sudo apt install python3.9 To confirm the version you want is available to install or not, you can run: sudo apt-cache policy python (version)Įxample: sudo apt-cache policy python 3.9 Once you have added the PPA repository, we can install most of the old python versions with just one command. sudo apt install software-properties-common sudo add-apt-repository ppa:deadsnakes/ppa Hence, we need to add a PPA offered by the “deadsnakes” team to get the old archived Python versions easily. The old versions of Python such as 3.9, 3.8, 3.7, and older are not available to install using the default system repository of Ubuntu 22.04 LTS Jammy JellyFish or 20.04 Focal Fossa. Open your terminal and run: sudo apt update & sudo apt upgrade Start with the system updateĮxecute the system update command to ensure our Ubuntu 22.04 has the latest security and package versions. In this tutorial, we learn how to get that… 1. There are many scenarios when we especially the developers need to have an old python version to work with some particular application or on the project. Uninstall Python and PPA Steps to install Python 3.9 or 3.8 on Ubuntu 22.04 LTS Python allows Python programs to be embedded in other languages as individual modules.ħ. The optimal programming style can be selected for the various tasks. Since Python is a so-called multiparadigm language, programmers are not tied to a specific programming style. Python supports several programming paradigms such as functional, object-oriented, or aspect-oriented programming and can also be used as a scripting language. It is considered easy to learn and can be interpreted in the common operating systems. It offers clear syntax and good readability. For web servers, WSGI (Web Server Gateway Interface) is a universal interface between the server and Python. Python can also be used on many mobile operating systems. The programming language is standard equipment in many Linux distributions. Python is freely available for the common operating systems. 3.8, 3.7, and more on Ubuntu 22.04 Jammy JellyFish using the command terminal. Learn how to use the PPA repository to install Python’s old versions such as 3.9.
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