Linux:
curl https://pyenv.run | bash

Add to ~/.bashrc (or ~/.zshrc)
export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
eval "$(pyenv init -)"

pyenv install 3.11.9
pyenv global 3.11.9 # or: pyenv local 3.11.9 (per-project)

Windows:
Allow rights:
Right-click on "Windows PowerShell" and select "Run as administrator."

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

Unblock-File -Path "C:\Users\Computer.pyenv\pyenv-win\bin\pyenv.ps1"

Install
https://github.com/pyenv-win/pyenv-win

pyenv exec python -m venv dance