Python_on_Instance.md

Python 3.11/3.12 Setup on Instance (Ubuntu)

This guide provides step-by-step instructions for updating and installing Python 3.11 and 3.12 on an Ubuntu-based instance.

Prerequisites

• An instance running Ubuntu
• User with sudo privileges

Steps

1. Update System Packages

Run the following command to update the package lists and upgrade installed packages:

sudo apt update && sudo apt upgrade -y

2. Install Required Dependencies

Install necessary system dependencies:

sudo apt install -y software-properties-common

3. Add the Deadsnakes PPA Repository

sudo add-apt-repository -y ppa:deadsnakes/ppa
sudo apt update

4. Install Python 3.11, 3.12, and Required Modules

sudo apt install -y python3.11 python3.11-venv python3.11-dev
sudo apt install -y python3.12 python3.12-venv python3.12-dev

5. Change Python Environment

Set up alternatives for Python versions:

sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.12 2
sudo update-alternatives --config python3

Select the desired version from the interactive prompt.

6. Upgrade Pip

Ensure pip is installed and upgraded:

python3 -m ensurepip --default-pip
python3 -m pip install --upgrade pip

7. Reboot the Instance

Reboot to apply changes:

sudo reboot

8. Verify Installation

Check installed versions of Python and pip:

pip3 --version
python3 --version

Notes

• The update-alternatives command allows switching between Python versions easily.
• Ensure all dependencies are installed before running Python-based applications.

Author

Abhishek Rajput