1.yum install python3 

[root@d0818dc7830c bin]# python3

Python 3.6.8 (default, Apr 16 2020, 01:36:27)

[GCC 8.3.1 20191121 (Red Hat 8.3.1-5)] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> quit()

Step 1: Setup the Environment

# yum install gcc openssl-devel bzip2-devel libffi-devel -y

Step 2: Download Python

# curl -O https://www.python.org/ftp/python/3.8.1/Python-3.8.1.tgz

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                 Dload  Upload   Total   Spent    Left  Speed

 25 22.8M   25 6032k    0     0  20235      0  0:19:44  0:05:05  0:14:39 26022

Now we need to extract the file.

 # cd python-3.8.1

Next, we need to prepare to compile Python from source.

# ./configure --enable-optimizations

Finally, we are going to use the following command to finish off the installation, without replacing the default system Python on our system.

checking ....

config.status: creating pyconfig.h

creating Modules/Setup.local

creating Makefile

# make altinstall

#Python 3.8.1 (default, Dec 27 2019, 17:12:30) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux Type "help", "copyright", "credits" or "license" for more information.

#