Install newer version of python 3.10 under CentOS 8

At present, the default version of python under CentOS 8 is Python 3.6.8, which is 6 years old. More and more python software needs newer versions, so it is a vital for pretty stable Linux distro to have an easy way to install newer programming languages like python!
Using Conda it is really easy to manage different environments for different python versions!

Conda is an open source package management system and environment management system that runs on Windows, macOS and Linux.

More on CondaInstalling conda command line in various systems with miniconda and create a simple python environment and all Conda tags – https://ahelpme.com/category/software/anaconda/. This article is not intended to introduce the reader with Conda, but to show how easy is to install the newer version of python 3.10 under CentOS 8 and it is easy because of using the Conda package management system!

To summarize, the purpose is to have a user with python 3.10. The user can be an ordinary or administrative one or even root.
Using this method older or newer versions of python may be installed on the same machine (at the same time).

STEP 1) Install the latest Miniconda3

The installation is easy and for more details check out the first link above.

[root@srv ~]# wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
--2022-04-24 00:33:53--  https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
Resolving repo.anaconda.com (repo.anaconda.com)... 104.16.131.3, 104.16.130.3, 2606:4700::6810:8303, ...
Connecting to repo.anaconda.com (repo.anaconda.com)|104.16.131.3|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 75660608 (72M) [application/x-sh]
Saving to: 'Miniconda3-latest-Linux-x86_64.sh'

Miniconda3-latest-Linux-x86_64.sh               100%[==================================================>]  72.16M  11.1MB/s    in 6.7s    

2022-04-24 00:33:59 (10.8 MB/s) - 'Miniconda3-latest-Linux-x86_64.sh' saved [75660608/75660608]

[root@srv ~]# chmod 755 Miniconda3-latest-Linux-x86_64.sh
[root@srv ~]# ./Miniconda3-latest-Linux-x86_64.sh 

Welcome to Miniconda3 py39_4.11.0

In order to continue the installation process, please review the license
agreement.
Please, press ENTER to continue
>>> 
===================================
End User License Agreement - Miniconda
===================================

Copyright 2015-2021, Anaconda, Inc.

All rights reserved under the 3-clause BSD License:

This End User License Agreement (the "Agreement") is a legal agreement between you and Anaconda, Inc. ("Anacon
da") and governs your use of Miniconda.

Subject to the terms of this Agreement, Anaconda hereby grants you a non-exclusive, non-transferable license t
o:

  * Install and use the Miniconda.
  * Modify and create derivative works of sample source code delivered in Miniconda subject to the Terms of Se
rvice for the Repository (as defined hereinafter) available at https://www.anaconda.com/terms-of-service, and

  * Redistribute code files in source (if provided to you by Anaconda as source) and binary forms, with or wit
hout modification subject to the requirements set forth below.

Anaconda may, at its option, make available patches, workarounds or other updates to Miniconda. Unless the upd
ates are provided with their separate governing terms, they are deemed part of Miniconda licensed to you as pr
ovided in this Agreement. This Agreement does not entitle you to any support for Miniconda.


Do you accept the license terms? [yes|no]
[no] >>> yes

Miniconda3 will now be installed into this location:
/home/myuser/miniconda3

  - Press ENTER to confirm the location
  - Press CTRL-C to abort the installation
  - Or specify a different location below

[/home/myuser/miniconda3] >>> 
PREFIX=/home/myuser/miniconda3
Unpacking payload ...
Collecting package metadata (current_repodata.json): done                                                     
Solving environment: done

## Package Plan ##

  environment location: /home/myuser/miniconda3

  added / updated specs:
    - _libgcc_mutex==0.1=main
    - _openmp_mutex==4.5=1_gnu
    - brotlipy==0.7.0=py39h27cfd23_1003
    - ca-certificates==2021.10.26=h06a4308_2
    - certifi==2021.10.8=py39h06a4308_2
    - cffi==1.15.0=py39hd667e15_1
    - charset-normalizer==2.0.4=pyhd3eb1b0_0
    - conda-content-trust==0.1.1=pyhd3eb1b0_0
    - conda-package-handling==1.7.3=py39h27cfd23_1
    - conda==4.11.0=py39h06a4308_0
    - cryptography==36.0.0=py39h9ce1e76_0
    - idna==3.3=pyhd3eb1b0_0
    - ld_impl_linux-64==2.35.1=h7274673_9
    - libffi==3.3=he6710b0_2
    - libgcc-ng==9.3.0=h5101ec6_17
    - libgomp==9.3.0=h5101ec6_17
    - libstdcxx-ng==9.3.0=hd4cf53a_17
    - ncurses==6.3=h7f8727e_2
    - openssl==1.1.1m=h7f8727e_0
    - pip==21.2.4=py39h06a4308_0
    - pycosat==0.6.3=py39h27cfd23_0
    - pycparser==2.21=pyhd3eb1b0_0
    - pyopenssl==21.0.0=pyhd3eb1b0_1
    - pysocks==1.7.1=py39h06a4308_0
    - python==3.9.7=h12debd9_1
    - readline==8.1.2=h7f8727e_1
    - requests==2.27.1=pyhd3eb1b0_0
    - ruamel_yaml==0.15.100=py39h27cfd23_0
    - setuptools==58.0.4=py39h06a4308_0
    - six==1.16.0=pyhd3eb1b0_0
    - sqlite==3.37.0=hc218d9a_0
    - tk==8.6.11=h1ccaba5_0
    - tqdm==4.62.3=pyhd3eb1b0_1
    - tzdata==2021e=hda174b7_0
    - urllib3==1.26.7=pyhd3eb1b0_0
    - wheel==0.37.1=pyhd3eb1b0_0
    - xz==5.2.5=h7b6447c_0
    - yaml==0.2.5=h7b6447c_0
    - zlib==1.2.11=h7f8727e_4


The following NEW packages will be INSTALLED:

  _libgcc_mutex      pkgs/main/linux-64::_libgcc_mutex-0.1-main
  _openmp_mutex      pkgs/main/linux-64::_openmp_mutex-4.5-1_gnu
  brotlipy           pkgs/main/linux-64::brotlipy-0.7.0-py39h27cfd23_1003
  ca-certificates    pkgs/main/linux-64::ca-certificates-2021.10.26-h06a4308_2
  certifi            pkgs/main/linux-64::certifi-2021.10.8-py39h06a4308_2
  cffi               pkgs/main/linux-64::cffi-1.15.0-py39hd667e15_1
  charset-normalizer pkgs/main/noarch::charset-normalizer-2.0.4-pyhd3eb1b0_0
  conda              pkgs/main/linux-64::conda-4.11.0-py39h06a4308_0
  conda-content-tru~ pkgs/main/noarch::conda-content-trust-0.1.1-pyhd3eb1b0_0
  conda-package-han~ pkgs/main/linux-64::conda-package-handling-1.7.3-py39h27cfd23_1
  cryptography       pkgs/main/linux-64::cryptography-36.0.0-py39h9ce1e76_0
  idna               pkgs/main/noarch::idna-3.3-pyhd3eb1b0_0
  ld_impl_linux-64   pkgs/main/linux-64::ld_impl_linux-64-2.35.1-h7274673_9
  libffi             pkgs/main/linux-64::libffi-3.3-he6710b0_2
  libgcc-ng          pkgs/main/linux-64::libgcc-ng-9.3.0-h5101ec6_17
  libgomp            pkgs/main/linux-64::libgomp-9.3.0-h5101ec6_17
  libstdcxx-ng       pkgs/main/linux-64::libstdcxx-ng-9.3.0-hd4cf53a_17
  ncurses            pkgs/main/linux-64::ncurses-6.3-h7f8727e_2
  openssl            pkgs/main/linux-64::openssl-1.1.1m-h7f8727e_0
  pip                pkgs/main/linux-64::pip-21.2.4-py39h06a4308_0
  pycosat            pkgs/main/linux-64::pycosat-0.6.3-py39h27cfd23_0
  pycparser          pkgs/main/noarch::pycparser-2.21-pyhd3eb1b0_0
  pyopenssl          pkgs/main/noarch::pyopenssl-21.0.0-pyhd3eb1b0_1
  pysocks            pkgs/main/linux-64::pysocks-1.7.1-py39h06a4308_0
  python             pkgs/main/linux-64::python-3.9.7-h12debd9_1
  readline           pkgs/main/linux-64::readline-8.1.2-h7f8727e_1
  requests           pkgs/main/noarch::requests-2.27.1-pyhd3eb1b0_0
  ruamel_yaml        pkgs/main/linux-64::ruamel_yaml-0.15.100-py39h27cfd23_0
  setuptools         pkgs/main/linux-64::setuptools-58.0.4-py39h06a4308_0
  six                pkgs/main/noarch::six-1.16.0-pyhd3eb1b0_0
  sqlite             pkgs/main/linux-64::sqlite-3.37.0-hc218d9a_0
  tk                 pkgs/main/linux-64::tk-8.6.11-h1ccaba5_0
  tqdm               pkgs/main/noarch::tqdm-4.62.3-pyhd3eb1b0_1
  tzdata             pkgs/main/noarch::tzdata-2021e-hda174b7_0
  urllib3            pkgs/main/noarch::urllib3-1.26.7-pyhd3eb1b0_0
  wheel              pkgs/main/noarch::wheel-0.37.1-pyhd3eb1b0_0
  xz                 pkgs/main/linux-64::xz-5.2.5-h7b6447c_0
  yaml               pkgs/main/linux-64::yaml-0.2.5-h7b6447c_0
  zlib               pkgs/main/linux-64::zlib-1.2.11-h7f8727e_4


Preparing transaction: done
Executing transaction: done
installation finished.
Do you wish the installer to initialize Miniconda3
by running conda init? [yes|no]
[no] >>> yes
no change     /home/myuser/miniconda3/condabin/conda
no change     /home/myuser/miniconda3/bin/conda
no change     /home/myuser/miniconda3/bin/conda-env
no change     /home/myuser/miniconda3/bin/activate
no change     /home/myuser/miniconda3/bin/deactivate
no change     /home/myuser/miniconda3/etc/profile.d/conda.sh
no change     /home/myuser/miniconda3/etc/fish/conf.d/conda.fish
no change     /home/myuser/miniconda3/shell/condabin/Conda.psm1
no change     /home/myuser/miniconda3/shell/condabin/conda-hook.ps1
no change     /home/myuser/miniconda3/lib/python3.9/site-packages/xontrib/conda.xsh
no change     /home/myuser/miniconda3/etc/profile.d/conda.csh
modified      /home/myuser/.bashrc

==> For changes to take effect, close and re-open your current shell. <==

If you'd prefer that conda's base environment not be activated on startup, 
   set the auto_activate_base parameter to false: 

conda config --set auto_activate_base false

Thank you for installing Miniconda3!

The installation is just a couple of questions about where to install it. The installation is under Linux user myuser, but it can be under any user even without administrative privileges.
Log off and log in to enable the Conda environment.

Last login: Sun Apr 24 15:10:48 UTC 2022 on pts/0
(base) [myuser@srv ~]$

There is an additional “(base)” next to the console command prompt.

STEP 2) Install python 3.10 and use the environment.

Install the python 3.10 by creating a python 3.10 environment and activate it when the user want to use python 3.10:

(base) [myuser@srv ~]$ conda create --name mypython310 python=3.10
Collecting package metadata (current_repodata.json): done
Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 4.11.0
  latest version: 4.12.0

Please update conda by running

    $ conda update -n base -c defaults conda



## Package Plan ##

  environment location: /home/myuser/miniconda3/envs/mypython310

  added / updated specs:
    - python=3.10


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    bzip2-1.0.8                |       h7b6447c_0          78 KB
    ca-certificates-2022.3.29  |       h06a4308_1         122 KB
    certifi-2020.6.20          |     pyhd3eb1b0_3         155 KB
    libuuid-1.0.3              |       h7f8727e_2          17 KB
    openssl-1.1.1n             |       h7f8727e_0         2.5 MB
    pip-21.2.4                 |  py310h06a4308_0         1.8 MB
    python-3.10.4              |       h12debd9_0        24.2 MB
    setuptools-61.2.0          |  py310h06a4308_0        1019 KB
    sqlite-3.38.2              |       hc218d9a_0         1.0 MB
    tzdata-2022a               |       hda174b7_0         109 KB
    zlib-1.2.12                |       h7f8727e_2         106 KB
    ------------------------------------------------------------
                                           Total:        31.1 MB

The following NEW packages will be INSTALLED:

  _libgcc_mutex      pkgs/main/linux-64::_libgcc_mutex-0.1-main
  _openmp_mutex      pkgs/main/linux-64::_openmp_mutex-4.5-1_gnu
  bzip2              pkgs/main/linux-64::bzip2-1.0.8-h7b6447c_0
  ca-certificates    pkgs/main/linux-64::ca-certificates-2022.3.29-h06a4308_1
  certifi            pkgs/main/noarch::certifi-2020.6.20-pyhd3eb1b0_3
  ld_impl_linux-64   pkgs/main/linux-64::ld_impl_linux-64-2.35.1-h7274673_9
  libffi             pkgs/main/linux-64::libffi-3.3-he6710b0_2
  libgcc-ng          pkgs/main/linux-64::libgcc-ng-9.3.0-h5101ec6_17
  libgomp            pkgs/main/linux-64::libgomp-9.3.0-h5101ec6_17
  libstdcxx-ng       pkgs/main/linux-64::libstdcxx-ng-9.3.0-hd4cf53a_17
  libuuid            pkgs/main/linux-64::libuuid-1.0.3-h7f8727e_2
  ncurses            pkgs/main/linux-64::ncurses-6.3-h7f8727e_2
  openssl            pkgs/main/linux-64::openssl-1.1.1n-h7f8727e_0
  pip                pkgs/main/linux-64::pip-21.2.4-py310h06a4308_0
  python             pkgs/main/linux-64::python-3.10.4-h12debd9_0
  readline           pkgs/main/linux-64::readline-8.1.2-h7f8727e_1
  setuptools         pkgs/main/linux-64::setuptools-61.2.0-py310h06a4308_0
  sqlite             pkgs/main/linux-64::sqlite-3.38.2-hc218d9a_0
  tk                 pkgs/main/linux-64::tk-8.6.11-h1ccaba5_0
  tzdata             pkgs/main/noarch::tzdata-2022a-hda174b7_0
  wheel              pkgs/main/noarch::wheel-0.37.1-pyhd3eb1b0_0
  xz                 pkgs/main/linux-64::xz-5.2.5-h7b6447c_0
  zlib               pkgs/main/linux-64::zlib-1.2.12-h7f8727e_2


Proceed ([y]/n)? y


Downloading and Extracting Packages
python-3.10.4        | 24.2 MB   | ################################################################### | 100% 
zlib-1.2.12          | 106 KB    | ################################################################### | 100% 
openssl-1.1.1n       | 2.5 MB    | ################################################################### | 100% 
setuptools-61.2.0    | 1019 KB   | ################################################################### | 100% 
certifi-2020.6.20    | 155 KB    | ################################################################### | 100% 
ca-certificates-2022 | 122 KB    | ################################################################### | 100% 
tzdata-2022a         | 109 KB    | ################################################################### | 100% 
sqlite-3.38.2        | 1.0 MB    | ################################################################### | 100% 
bzip2-1.0.8          | 78 KB     | ################################################################### | 100% 
pip-21.2.4           | 1.8 MB    | ################################################################### | 100% 
libuuid-1.0.3        | 17 KB     | ################################################################### | 100% 
Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate mypython310
#
# To deactivate an active environment, use
#
#     $ conda deactivate

(base) [myuser@srv ~]$

Start using the python 3.10 by:

(base) [myuser@srv ~]$ conda activate mypython310
(mypython310) [myuser@srv ~]$ python -V
Python 3.10.4

It is easy and the python 3.1 environment is isolated from the base CentOS 8 packages (and users), so updating the CentOS 8 won’t break the python 3.10 environment, which may be the case if a compilation of python 3.10 way is used instead Conda!

The easiest way to activate python 3.10 by default is just writing the activation line in .bashrc file:

(base) [myuser@srv ~]$ echo "conda activate mypython310" >> .bashrc 

After this, every login will activate immediately the python 3.10 environment.

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