Setting up Python on M2 Macbook Air

Notes on how I set up Python on my M2 Macbook Air. This is one of those posts that is more for my own records but here it is.

Prerequisites:

xcode-select --install

The following prompt will show up asking if you would like to install the tools now.
After it installs type this command in the Terminal

xcode-select -p

% /Library/Developer/CommandLineTools

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Run these two commands in your terminal to add Homebrew to your PATH (Homebrew gives these commands to you after installation):

echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/lukegrippa/.zprofile
 
eval "$(/opt/homebrew/bin/brew shellenv)"

Check if Homebrew is installed correctly

brew doctor

Terminal should respond

% Your system is ready to brew.

brew install pyenv

To update in the future use

brew update
brew upgrade pyenv

Add three lines to your configuration file

This line sets an environment variable (PYENV_ROOT) that points to the pyenv directory.

echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.zprofile

This line puts pyenv first in your search path so that the OS will find pyenv’s Python(s) before any other Pythons.

echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zprofile

echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n eval "$(pyenv init -)"\nfi' >> ~/.zprofile

Before installing python I want to install a couple of packages

brew install openssl readline sqlite3 xz zlib

Check which version are available

pyenv install -l
 
pyenv install --list

Install latest version

pyenv install 3.10.5

Rehash Python binaries

pyenv rehash

Check which versions you have downloaded

pyenv versions

Set Global version of Python

pyenv global 3.10.5

Uninstall a version of Python

pyenv uninstall 3.10.5