ubuntu 20.04 python version

What's the default Python version in Ubuntu 20.04?

askubuntu.com › questions › 1232812 › whats-the-default-python-version-in-ubuntu-20-04

Ubuntu 20.04 has Python 3.8.2 as the default version. Python 2.7 has been moved to universe and is not included by default in any new installs. Official Release Notes about Python

Answer from Tylore on askubuntu.com

Ask Ubuntu

askubuntu.com › questions › 1232812 › whats-the-default-python-version-in-ubuntu-20-04

python3 - What's the default Python version in Ubuntu 20.04? - Ask Ubuntu

Top answer

1 of 4

35

Ubuntu 20.04 has Python 3.8.2 as the default version. Python 2.7 has been moved to universe and is not included by default in any new installs. Official Release Notes about Python

2 of 4

12

If you want to find the default Python 3 version of any Ubuntu release, you can run the command

rmadison python3

 python3 | 3.2.3-0ubuntu1   | precise         | all
 python3 | 3.2.3-0ubuntu1.2 | precise-updates | amd64, armel, armhf, i386, powerpc
 python3 | 3.4.0-0ubuntu2   | trusty          | amd64, arm64, armhf, i386, powerpc, ppc64el
 python3 | 3.5.1-3          | xenial          | amd64, arm64, armhf, i386, powerpc, ppc64el, s390x
 python3 | 3.6.5-3          | bionic          | amd64, arm64, armhf, i386, ppc64el, s390x
 python3 | 3.6.7-1~18.04    | bionic-updates  | amd64, arm64, armhf, i386, ppc64el, s390x
 python3 | 3.8.2-0ubuntu2   | focal           | amd64, arm64, armhf, i386, ppc64el, riscv64, s390x
 python3 | 3.8.6-0ubuntu1   | groovy          | amd64, arm64, armhf, i386, ppc64el, riscv64, s390x

Alternatively, check the package

https://packages.ubuntu.com/search?keywords=python3&searchon=names&exact=1&suite=all&section=all

For groovy (Ubuntu 20.10), it's Python 3.8.6:

Stack Exchange

unix.stackexchange.com › questions › 652299 › changing-pythons-default-version-breaks-ubuntu-20-04

python3 - Changing Python's default version breaks Ubuntu 20.04 - Unix & Linux Stack Exchange

Top answer

1 of 2

14

As you discovered, the system does rely on the system version of Python being as it expects. If you really want a system with Python 3.6, your best bet is to find a (ideally, still supported) release using Python 3.6: in your case, Ubuntu 18.04.

If you want to provide Python 3.6 for programs running on your AMI, you could look into using virtual environments instead of replacing the system Python. pyenv is a good place to start.

2 of 2

9

Administer the environment of any machine on the cloud as you would that of a physical machine near you. If you work with Ubuntu 20.x and your default Python installation on it is 3.8, but you require Python v3.6, install a virtual environment as needed. You can do that with pyenv. What you are doing at the moment is breaking your default Python installation in slow motion with all the adverse effect this will have on countless packages on that machine (cloud based or not).

I add a tutorial I wrote on the virtualization of Python environments, in case of interest (in particular in pyenv).

Discussions

ubuntu 20.04 comes with python 3.8 .Is it possible to change default python version to 3.6.15 for a project? - Stack Overflow

ubuntu 20.04 comes with python 3.8 .for a project to run i need default python version 3.6.15.Didnt find proper solution over the internet to change version to 3.6.15.please suggest.when tried to r... More on stackoverflow.com

stackoverflow.com

Ubuntu 20.04 - Python version problems

I've never done anything with Oracle Cloud (and haven't used 20.04 in quite some time), so I apologize in advance if this doesn't actually solve your problem. A great option for installing versions of python other than what is installed on your system is conda (or Anaconda). I usually use the miniconda or miniforge installer since I don't like managing any of this stuff with a GUI. I generally find it easier to use than virtualenv. The big advantage of conda environments is that each one can have a different version of python. You can still use pip to install packages once you have installed python, or you can use the conda command to install packages. Personally, I'd undo whatever you did to change your system wide install of python to 3.10 (unless that is officially supported for 20.04) and use conda to pick and choose the version you want for whatever project you are working on. Edit: Just tried this to see if I could make it work, and for some reason `./algo` expects the use of virtualenv instead of conda; something I have never run into before. Maybe this will help; I'm not familiar enough with algo to know... git clone https://github.com/trailofbits/algo.git cd algo conda create -n algo conda activate algo conda install python=3.10 # type y to confirm pip install -r requirements.txt # Algo thinks you should have virtualenv (wtf?!?), fake it out mkdir -p .env/bin touch .env/bin/activate chmod +x .env/bin/activate ./algo More on reddit.com

r/Ubuntu

3

2

June 2, 2024

How to properly migrate python on LTS upgrade 20.04 to 22.04

Adding the Deadsnakes PPA is the way to go. See https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa . In short: sudo add-apt-repository ppa:deadsnakes/ppa sudo apt update sudo apt install python-3.8 ...and you have a working Python 3.8 installed next to the platform default. That's what you want, you should not mess with the default. You can then recreate venvs with 3.8; that should be the way to get your old apps running again. More on reddit.com

r/Ubuntu

4

February 28, 2023

I encountered an issue with Python 3 upgrading to 20.04 using do-release-upgrade. Here’s an article I wrote with a fix/workaround.

Thanks for sharing. I’m running 18.04 LTS and will wait until the July release of 20.04 LTS.

I’m hoping I don’t have this issue, but if I do I will sing your praises for posting this.

Videos

08:37

YouTube

install latest python ubuntu 20 04 - YouTube

March 26, 2024

11

youtube.com

How to install multiple python versions on ubuntu 20 04 lts

03:16

YouTube

default python version ubuntu 20 04 - YouTube

March 16, 2024

03:19

YouTube

Upgrade to Python 3.10 on Ubuntu 18.04 or 20.04 LTS - YouTube

January 10, 2023

04:02

YouTube

how to install python 3 6 in ubuntu 20 04 - YouTube

how to check python version in ubuntu 20 04 - YouTube

hackersandslackers.com › multiple-python-versions-ubuntu-20-04

Managing Multiple Versions of Python on Ubuntu 20.04

February 25, 2021 - Code boot camps and tutorials do ... is the first LTS version of Ubuntu to drop Python2, coming fresh out of the box with Python 3.8.5....

Ubuntu

documentation.ubuntu.com › ubuntu-for-developers › reference › availability › python

Available Python versions - Ubuntu for Developers

April 5, 2026 - Python versions available in Ubuntu releases from 14.04 to the current development series.

Stack Overflow

stackoverflow.com › questions › 74498445 › ubuntu-20-04-comes-with-python-3-8-is-it-possible-to-change-default-python-vers

ubuntu 20.04 comes with python 3.8 .Is it possible to change default python version to 3.6.15 for a project? - Stack Overflow

ubuntu 20.04 comes with python 3.8 .for a project to run i need default python version 3.6.15.Didnt find proper solution over the internet to change version to 3.6.15.please suggest.when tried to remove 3.8 ubuntu ran into problems.

Serverspace

serverspace.io › support › help › install-python-latest-version-on-ubuntu-20-04

Install Python (latest version) on Ubuntu 20.04

February 28, 2025 - ln -s /usr/bin/python3.11 /usr/bin/python python --version · If setup via pre-built package is impossible, you also have the way to build "fresh" Python from the codes.

Ubuntu Wiki

wiki.ubuntu.com › FocalFossa › ReleaseNotes

FocalFossa/ReleaseNotes - Ubuntu Wiki

March 21, 2023 - In 20.04 LTS, the python included in the base system is Python 3.8.

Find elsewhere

Google Bing Mojeek

RoseHosting

rosehosting.com › home › how to install and switch python versions on ubuntu 20.04

How to Install and Switch Python Versions on Ubuntu 20.04 | RoseHosting

October 5, 2022 - In the first step of this tutorial we are going to install the default Python2 and Python3 versions in Ubuntu 20.04.

Vultr

docs.vultr.com › install-the-latest-version-of-python-from-source-on-ubuntu-20-04

How to Install Latest Python from Source on Ubuntu 20.04 | Vultr Docs

April 1, 2025 - Ubuntu 20.04 comes with Python 3.8 pre-installed. However, you can install another version of Python 3 if you want.

reddit.com › r/ubuntu › ubuntu 20.04 - python version problems

r/Ubuntu on Reddit: Ubuntu 20.04 - Python version problems

June 2, 2024 -

Hi, it's been a few years since I used linux, to be honest it must have been 20-25 years ago.
And now Im interested in to playing with Oracle Cloud and have installed Ubuntu 20.04.6 LTS (GNU/Linux 5.15.0-1037-oracle x86_64)
And know I want to try Algo,
I have read some guides and watch YouTube and every one is like this,
https://pastebin.com/Vqm4ijRF
But I facing some problems,
First I had problem with ansible==9.1.0 that is in the reguirments.txt
What I was think is that doesn't works with python 3.8

then I tried to install python 3.10, bur can get it to work
When I run:
python3 -m virtualenv --python="$(command -v python3)" .env &&
source .env/bin/activate &&
python3 -m pip install -U pip virtualenv &&
python3 -m pip install -r requirements.txt

I get this error:
RuntimeError: failed to find interpreter for Builtin discover of python_spec="alias python3='/usr/bin/python3.10'"

I had some other error earlier and have changed this:
In .bashrc I have added this line:
alias python3='/usr/bin/python3.10'
Changed the links to:
sudo ln -sf /usr/bin/python3.10 /usr/bin/python3
sudo ln -sf /usr/bin/python3.10 /usr/bin/python

So what do I do wrong here, can some one give me some tip?
And is´t bad to change the links to python 3.10, when system runs 3.8?

Top answer

1 of 1

1

I've never done anything with Oracle Cloud (and haven't used 20.04 in quite some time), so I apologize in advance if this doesn't actually solve your problem. A great option for installing versions of python other than what is installed on your system is conda (or Anaconda). I usually use the miniconda or miniforge installer since I don't like managing any of this stuff with a GUI. I generally find it easier to use than virtualenv. The big advantage of conda environments is that each one can have a different version of python. You can still use pip to install packages once you have installed python, or you can use the conda command to install packages. Personally, I'd undo whatever you did to change your system wide install of python to 3.10 (unless that is officially supported for 20.04) and use conda to pick and choose the version you want for whatever project you are working on. Edit: Just tried this to see if I could make it work, and for some reason `./algo` expects the use of virtualenv instead of conda; something I have never run into before. Maybe this will help; I'm not familiar enough with algo to know... git clone https://github.com/trailofbits/algo.git cd algo conda create -n algo conda activate algo conda install python=3.10 # type y to confirm pip install -r requirements.txt # Algo thinks you should have virtualenv (wtf?!?), fake it out mkdir -p .env/bin touch .env/bin/activate chmod +x .env/bin/activate ./algo

GitHub

gist.github.com › turicas › aabe80601a69287766cb8a4307e0910e

Python versions in Debian and Ubuntu official Docker images · GitHub

The table below was made by installing the package python3 in each Docker image and then running python --version (see the python-versions.sh for more details). Release and end of life dates were taken from: ... ¹: for Ubuntu current releases (LTS and the last two), this column represents the end of standard support, not the end of life; for AlmaLinux, this column represents the end of active support (not the end of security support).

LinuxConfig

linuxconfig.org › home › ubuntu 20.04 python version switch manager

Ubuntu 20.04 Python version switch manager

May 12, 2020 - First step is to check what python versions are available on your Ubuntu system. To do so execute the following command: $ ls /usr/bin/python* /usr/bin/python2 /usr/bin/python2.7 /usr/bin/python3 /usr/bin/python3.7 /usr/bin/python3.7m /usr/bin/python3.8 /usr/bin/python3-futurize /usr/bin/python3m /usr/bin/python3-pasteurize · Next, check if you already have some python alternatives configured. To do so run: sudo update-alternatives --list python update-alternatives: error: no alternatives for python

GitHub

gist.github.com › stas00 › d6851b7dc631c44fa273873d1332dc1e

Install Python 3.10.x on Ubuntu 20.04 · GitHub

Install Python 3.10.x on Ubuntu 20.04 · Raw · README.md · sudo apt update sudo apt install software-properties-common -y · sudo add-apt-repository ppa:deadsnakes/ppa sudo apt update · Press ENTER to confirm adding repository. sudo apt install ...

Ask Ubuntu

askubuntu.com › questions › 1461874 › how-can-i-install-pythons-latest-version-on-ubuntu-20-04-and-make-sure-that-it

apt - How can I install Python's latest version on Ubuntu 20.04 and make sure that it's set as the default Python version for all users on the system? - Ask Ubuntu

Top answer

1 of 1

6

First of all: NEVER change the default version of Python that ships with the Ubuntu release. Parts of the system rely on this specific Python version. Changing the version may result in all types of errors up to a not anymore working Ubuntu installation.

However, it is very easy to install multiple Python major release parallel without conflicting each other. They just have to be called by stating the specific version, e.g. python3.11 for Python 3.11.

This can be achieved by compiling and installing Python yourself. The process is pretty easy and straight forward.

A step-by-step instruction can be found at ubuntuhandbook.org: Link

The really important step in the process is to use sudo make altinstall after running .\configure, as altinstall ensure that the default Python version is not overwritten.

DedicatedCore

dedicatedcore.com › home › how to install python 3 on ubuntu 20.04

How to Install Python 3 on Ubuntu 20.04 - DedicatedCore Blog

October 16, 2024 - There could be different major Python versions (3.x or 2.x) installed on your computer. The second digit can be used to select between Python 3.7.x and Python 3.8.x if you have both versions installed: ... Python 3 may be easily installed on ...

DEV Community

dev.to › toddbirchard › managing-multiple-versions-of-python-on-ubuntu-2004-2c3l

Managing Multiple Versions of Python on Ubuntu 20.04 - DEV Community

May 3, 2022 - Code bootcamps and tutorials do ... is the first LTS version of Ubuntu to drop Python2, coming fresh out of the box with Python 3.8.5....

reddit.com › r/ubuntu › how to properly migrate python on lts upgrade 20.04 to 22.04

r/Ubuntu on Reddit: How to properly migrate python on LTS upgrade 20.04 to 22.04

February 28, 2023 -

Dear community,

I recently performed a LTS upgrade from 20.04.4 to 22.04.2, but I have noticed that many if not all my applications installed in python 3.8 (default on 20.04) were not ported/upgraded to 3.10 (default on 22.04). Python 3.8 got simply erased, although both /home/me/.local/lib/python3.8/site-packages/ and /usr/local/lib/python3.8/dist-packages/are still present. I have asked around and figured out that I most likely should:

install python 3.8 along with 3.10;
mange it via update-alternatives;
upgrade all the missing apps/modules to 3.10;
erase what is left on 3.8.

Nevertheless, I could not find a standard procedure to deal with this issue, and I am not confident enough that the former solution is valid (for sure is highly time consume and prone to errors). Please let me know how it is usually tacked a LTS upgrade for python.

Top answer

1 of 1

2

Adding the Deadsnakes PPA is the way to go. See https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa . In short: sudo add-apt-repository ppa:deadsnakes/ppa sudo apt update sudo apt install python-3.8 ...and you have a working Python 3.8 installed next to the platform default. That's what you want, you should not mess with the default. You can then recreate venvs with 3.8; that should be the way to get your old apps running again.

Linuxize

linuxize.com › home › python › how to install python 3.9 on ubuntu 20.04

How to Install Python 3.9 on Ubuntu 20.04 | Linuxize

November 15, 2020 - Python 3.9 is not available in the standard Ubuntu 20.04 repositories.

ComputingForGeeks

computingforgeeks.com › home › how to install python 3.10 on ubuntu 22.04|20.04|18.04

How To Install Python 3.10 on Ubuntu 22.04|20.04|18.04 [Guide]

March 21, 2026 - Modules and extensions are useful in Python as they add functionality to it. Modules can be installed on Ubuntu 20.04|18.04 using the Python Package manager (PIP).

UbuntuHandbook

ubuntuhandbook.org › home › howtos › ubuntu got new “official” python ppa with backports for lts

Ubuntu Got New “Official” Python PPA with Backports for LTS | UbuntuHandbook

January 6, 2026 - For developers and those who need most recent or different but non-default Python versions, Ubuntu now has an “official” backport PPA for Ubuntu 22.04, Ubuntu 24.04, and Ubuntu 26.04 LTS. Ubuntu has Python pre-installed, but it won’t update the major version number. It has Python 3.10 for ...