Updating python on linux

How to Update Python Version? — [Upgrade Python Version]

Are you looking to update Python version to the latest python version? Then this blog post will guide you with how to upgrade Python version.

List of content you will read in this article:

Python is an open-source high-level programming language that allows users to execute commands and plugins on their machine and even software from several major suppliers. It means that you can operate it on many different operating systems, including the Windows VPS Server. Python is a cross-platform programing language.

Pip is one of the best applications for Python packages installation and administration. Pip’s popularity stems from the large number of apps that use this tool. Pip enables 3rd Party package installed to manage binary packages with the quickly configured package manager. Since Python’s latest releases have piping as normal, this guide will explain how to install PIP, how to update Python version with a complete step-by-step guide.

What is PIP?

PIP is a software management framework for installing and managing Python-written program packages. It is called the ‘preferred software installer’ or ‘Pip Installs Packages.’ PIP used for Python, is a command-line interface for handling PyPI program installation. You might need to upgrade PIP if you’re using an earlier version of Python on Windows. Download the application file, open the command- line and start the installer to run PIP on Windows quickly. It will teach you how PIP is installed on Windows, how it can be modified, upgraded, and set up.

How to update Python on Windows Operating System?

Go to the Python update page and download and install the Python 3.9 installer to update the python on your windows system. You’re still undecided about which version to have. It is recommended to use the Windows x86–64 executable installer.

Python Installer (Recommended) (Screenshot from the Python Download page)

Check the «Add Python to Path» option during installation to register Python3.9 as your system’s main Python.

How To Upgrade Python on macOS?

You can download the latest version of Python for macOS from the official Python website, similar as you did on windows OS to update Python version on your system. To check it is updated to the lasted version or not follow the below-listed commands to check Python version.

If you want to execute this new Python release with the python command instead of python3, install an alias in your $HOME directory’s bash profile file.

Open the terminal window and type the following commands:

Then, at the bottom, add this segment.

Python 3.9 version can be checked using the following command.

How to Update Python version on LINUX?

Users can use the below listed Linux commands to upgrade Python version to the latest released version:

ppa:deadsnakes/ppa can be added to the system’s Software Sources to upgrade the machine with unsupported packages from this untrusted PPA.

$ sudo add-apt-repository ppa:deadsnakes/ppa

This command is used to update Python package.

$ sudo apt update

$ sudo apt install python3.9

Then, using the commands below, you can search the versions of your new and current Python installations:

This command will show you the following version of python installed in your system

$ sudo python —version

$ sudo python3 —version

$ sudo python3.9 —version

Conclusion

We have seen how to update Python version on operating systems like Windows, Mac OS, and Linux. Follow the guide carefully to update your python software. we believe this guide fulfills your requirement though you can install the latest version successfully. Leave your comments below for your feedback and queries.

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Как обновить Python в Linux?

Руководство по обновлению Python в операционных системах семейства Linux.

Введение

Представь себе ситуацию, ты придумал какой-нибудь проект, решил реализовать его на Python, открываешь терминал и обнаруживаешь старую версию, например Python 3.4.

Правильно, обновить Python через пакетный менеджер.

Далее я расскажу как это сделать.

Все команды необходимо выполнять под пользователем root или же через sudo.

Обновление Python

Рассмотрим несколько примеров обновления Python в самых популярных дистрибутивах

Обновление Python в Debian Linux (Ubuntu, Raspbian, Mint и другие)

В моем случае я буду использовать raspberrypi 4 с дистрибутивом raspbian (основан на Debian buster). Открываем терминал (или подключаемся по ssh) и вводим команду apt update

Видим примерно такую же ситуацию, локальный репозиторий обновил информацию о доступным пакетах из сетевого репозитория и стали доступны обновления других пакетов. Но мы сейчас не об этом. Нас интересует только python.

Далее вводим команду

В моем дистрибутиве используется последняя доступная версия 3.7.3-1

Обновление Python в Red Hat Linux (CentOS и Fedora Linux)

В принципе обновление пакетов в linux имеет схожий алгоритм. Сперва вы получаете список доступных пакетов из удаленного репозитория и сравнивание с тем, что установлено у вас локально. После обновление локального репозитория нужно инициализировать установку python. Разнообразных дистрибутивов linux у меня под рукой нет, да и используя я в серверных вариантах только debian-based. Но информация о работе с другими пакетными менеджерами доступна онлайн:)

Обновление python выполняется одной командой

Заключение

В этом руководстве мы узнали как обновить Python в Linux.

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How to Upgrade to Python 3.7 on Ubuntu 18.04/18.10

Disclaimer

Edited: 2020-12-28 16:53:45 UTC

Instead of using below method please consider adding a new/multi python version on your system. According the python version you want, look at one of the articles below:

Since below method may cause system error: probably break apt or misconfiguration of the system.

Intro

In this article, we upgrade to python 3.7 from python 3.6 and configure it as the default version of python.

I was just trying to upgrade my python and I find it a little bit hard to do. Python 3.6 is the default version that comes with Ubuntu 18.04/18.10 But the latest version is Python 3.8. So it would be better to upgrade one major version.

Step 0: Check the current python version

Run below command to test the current version installed of python.

Output will be like:

Step 1: Install python3.7

Install python by typing:

Step 2: Add python 3.6 & python 3.7 to update-alternatives

Step 3: Update python 3 to point to python 3.7

By default, Python 3.6 is pointed to Python 3 . That means when we run python3 it will execute as python3.6 binary but we want to execute this as python3.7 .

Type this command to configure python3:

You should get the above output. Now type 2 and hit enter for Python 3.7 . Remember the selection number may differ so choose the selection number which is for Python 3.7 .

Alternative update python 3 to point to python3.7

/usr/bin/python3 is just a symlink . Delete it and make a new symlink to python3.7 :

Step 4: Test the new version of python3

Changelog

• 2020-03-10 : Add disclaimer and warning
• 2020-12-28 : Add newer alternative python versions

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How to Install and Update Python to 3.9 in Ubuntu

In this article, we will explore the newest methods to install or update to the latest version of Python on our Ubuntu system.В

What is Python?

Python is an interpreted, object-oriented, high-level programming language with dynamic semantics. It’s high-level built in data structures, combined with dynamic typing and dynamic binding, make it very attractive for Rapid Application Development and use as a scripting or glue language to connect existing components together. Python’s simple, easy to learn syntax emphasizes readability and therefore reduces the cost of program maintenance. Python supports modules and packages, which encourages program modularity and code reuse.

Prerequisites

We begin as always, by running our updates. This ensures that all of our system software is up to date.

Next, we will add software-properties-common. This software provides some additional scripts that are useful for adding and removing a PPA.

Add Repository, Update, and Install

Now, we add the repository and then run another update to allow our system to recognize the changes.

Finally, we run the installation to add the latest version of Python. As an aside, we have opted to install the -dev and -venv features as well. This ensures we have Python 3.8, pip, and virtualenv.В

Verify Installation

To verify our installation of the required version, use the -V flag to ensure the correct version is set up.

Source Installation

Install Prerequisite

As you are going to install Python 3.8 from the source. You need to install some development libraries to compile Python source code. Use the following command to install prerequisites for Python:

Search for Latest Version

If by chance you try and update your system and apt returns no results, we can use the apt list command to locate the updates we need.

Download and Setup

Rationalize Command Usage

In the three commands above, we configured our installation to enable the optimizations within Python. This allows it to run about 10 percent faster. Adding this flag may add more time to the overall compilation period, but it is worth it if you often work in Python. Using the —with-ensurepip=install flag installs pip bundled with this deployment.В

Using the -j option tells make command to split the process into “parallel steps” to speed up the compilation process. Even with this option enabled for parallel builds, this step can take a while.

We also run the command make altinstall to prevent our installation from replacing the default python binary file in /usr/bin/python.

Test Python

We can also run the Python test suite to ensure the installation is working as expected on our system. To run the test suite, type in the following command.

Our server will be running tests for some time, and if all the tests pass, we can be sure that our new Python build is working as expected!

Clean Up

After a successful installation, remove the downloaded archive to save disk space

Add Python to the system PATH

We can also configure Python into the system PATH to allow users to run the pip command within a terminal to install packages into our home directory. The recommended method to add Python to the PATH is to append Python’s version that you installed to the system-wide PATH variable. For example, this can be defined by a script within the /etc/profile.d/ directory.

Remove Old Python Versions

Typically, there is no reason to remove older versions of python as there may be scripts on the operating system which require their presence. The most effective way to run an alternative version of Python is within a virtual environment (venv). We can, however, review what versions of Python we currently have installed on our system.В

Conclusion

Our Support Teams are filled with experienced Linux technicians and talented system administrators who have intimate knowledge of multiple web hosting technologies, especially those discussed in this article.

Should you have any questions regarding this information, we are always available to answer any inquiries with issues related to this article, 24 hours a day, 7 days a week 365 days a year.

If you are a Fully Managed VPS server, Cloud Dedicated, VMWare Private Cloud, Private Parent server, Managed Cloud Servers, or a Dedicated server owner and you are uncomfortable with performing any of the steps outlined, we can be reached via phone at @800.580.4985, a chat or support ticket to assisting you with this process.

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About the Author: David Singer

I am a g33k, Linux blogger, developer, student, and former Tech Writer for Liquidweb.com. My passion for all things tech drives my hunt for all the coolz. I often need a vacation after I get back from vacation.

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Обновление Python в системе Ubuntu

Я хочу обновить сборку Python на своем компьютере с Linux, но я знаю, как это сделать, — удалить текущую версию и установить новую. Моя система уже обновлена ​​(я вчера обновил). Я хотел знать, есть ли способ обновить определенную программу из командной строки, например sudo apt-get update

. Я знаю, что эта команда не существует, но я надеюсь, что что-то эквивалентное делает.

Как уже отмечали другие, bare sudo apt-get install package установит последнюю доступную версию, заменив старую при необходимости.

Но с некоторыми программами (среди которых есть Python) ситуация несколько иная. Некоторые основные, очень и несовместимо разные версии получают свои собственные пакеты. Например, Python 2.6 , Python 2.7 , Python 3.1 все живут в отдельных пакетах в Ubuntu.

Особое значение имеет тот факт, что одной из политик Ubuntu является широкое использование Python для написания программного обеспечения для конечных пользователей. Таким образом , в самом деле, довольно большая часть системы будет написана на Python. На данный момент код работает на Python 2.6 — поэтому эта версия по умолчанию устанавливается при установке; и код не будет легко работать, скажем, на Python 2.7 — потому что существуют несовместимости. Чтобы переключить систему на Python 2.7, необходимо выполнить часть работы, включающую обновление и повторное тестирование всех сценариев. Это не может быть сделано легко; то есть вы не можете просто «переключить» свою систему на Python 2.7 и удалить старую версию.

Но. Если вам не интересны модные механизмы вашей системы и вам нужен только новый Python — не вижу препятствий. Иди и sudo apt-get install python3 и код для 3.x Python смело; просто не забывайте запускать свои скрипты python3 и использовать #!/usr/bin/env python3 строку shebang.

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