pyenv installation for raspberry pi (Bullseye)

Let start by installing all the necessary libraries.

sudo apt install -y git openssl libssl-dev \
    libbz2-dev libreadline-dev libsqlite3-dev \
    libffi-dev liblzma-dev

use pyenv-installer script to make our live a lil' bit easier.

curl https://pyenv.run | bash

edit your ~/.bashrc, add this 3 lines at the end of the file. what it does? this 3 lines is going to add pyenv executable to the environment PATH of the shell session and to enable autocomplete function

restart the shell session by reopening the terminal session or reload the session using this command

source ~/.bashrc

install any python version you wanted, use this command to list all available python versions

pyenv install -l

 i.e. installing python version 3.10.

pyenv install 3.10.5

it's always a good idea to create individual venv for each of your projects, i.e. making a venv named project1 based of python 3.10.5

pyenv virtualenv 3.10.5 project1

activate the venv for this shell session

pyenv shell project1

to confirm which version of the venv currently active

pyenv version

you can make the shell automagically enabled for when changing directory to specific projects folder.

cd ~/project_folder

pyenv local project1

or just enable it globally

pyenv global project1