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Python 3.9 : Install
2021/03/15
 
Install Python 3.9.
[1] It's possible to install Python 3.9 from AppStream.
[root@dlp ~]#
dnf module -y install python39

Dependencies resolved.
==========================================================================================
 Package                     Arch    Version                              Repo        Size
==========================================================================================
Installing group/module packages:
 python39                    x86_64  3.9.2-1.module_el8.4.0+720+bfbc1bcb  appstream   32 k
Installing dependencies:
 python39-libs               x86_64  3.9.2-1.module_el8.4.0+720+bfbc1bcb  appstream  8.1 M
 python39-pip-wheel          noarch  20.2.4-3.module_el8.4.0+680+7b309a77 appstream  1.3 M
 python39-setuptools-wheel   noarch  50.3.2-3.module_el8.4.0+680+7b309a77 appstream  497 k
Installing weak dependencies:
 python39-pip                noarch  20.2.4-3.module_el8.4.0+680+7b309a77 appstream  2.0 M
 python39-setuptools         noarch  50.3.2-3.module_el8.4.0+680+7b309a77 appstream  871 k
Installing module profiles:
 python39/common
Enabling module streams:
 python39                            3.9

Transaction Summary
==========================================================================================
Install  6 Packages
.....
.....

[root@dlp ~]#
python3 -V

Python 3.9.2

# verify to create test script

[root@dlp ~]#
echo -e "import sys\nprint(sys.version)" > python3_test.py

[root@dlp ~]#
python3 python3_test.py

3.9.2 (default, Mar 10 2021, 17:29:56)
[GCC 8.4.1 20200928 (Red Hat 8.4.1-1)]
[2] If you installed multiple version of Python 3, it's possible to switch them with [alternatives].
[root@dlp ~]#
alternatives --config python3


There are 3 programs which provide 'python3'.

  Selection    Command
-----------------------------------------------
*  1           /usr/bin/python3.6
 + 2           /usr/bin/python3.8
   3           /usr/bin/python3.9

Enter to keep the current selection[+], or type selection number: 3

[root@dlp ~]#
python3 -V

Python 3.9.2
[3] If you'd like to use [python] command which does not have version number, it's possible to switch them with [alternatives].
[root@dlp ~]#
alternatives --config python


There are 5 programs which provide 'python'.

  Selection    Command
-----------------------------------------------
*+ 1           /usr/libexec/no-python
   2           /usr/bin/python3
   3           /usr/bin/python2
   4           /usr/bin/python3.8
   5           /usr/bin/python3.9

Enter to keep the current selection[+], or type selection number: 5

[root@dlp ~]#
python -V

Python 3.9.2
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