Ubuntu/Python/3.14

Add Deadsnakes and install python 3.14

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt update
sudo apt install python3.14

python3.14 --version

For development, virtuan env, and pip:

sudo apt install python3.14-dev python3.14-venv python3.14-pip

For a more complete installation including the Tkinter IDE and other utilities, you can use:

sudo apt install python3.14-full