Install/ upgrade python to python3.9 on SUSE 15 linux

python_upgrade_suse15.sh

#!/bin/bash

sudo zypper refresh

# setup developer tools first if you dont have them already
sudo zypper install gcc zlib-devel bzip2 libbz2-devel libffi-devel libopenssl-devel readline-devel sqlite3 sqlite3-devel xz xz-devel

# Download and install OpenSSL
wget https://www.openssl.org/source/openssl-1.1.1l.tar.gz
tar xvf openssl-1.1.1l.tar.gz
cd openssl-1.1.1l
./config
make
sudo make install
cd ..

# Install the development tools
sudo zypper install -t pattern devel_basis

# Download the Python 3.9 source code
wget --no-check-certificate https://www.python.org/ftp/python/3.9.7/Python-3.9.7.tgz

# Extract the downloaded file
tar xvf Python-3.9.7.tgz

# Navigate to the Python-3.9.7 directory
cd Python-3.9.7

# Configure the build process
./configure --with-ensurepip=install --with-openssl=/usr/local/ssl

# Compile Python source code
make

# Install the Python binary
sudo make install

# Verify the installation
python3.9 --version