Python Install on MacOS.md

Python3 Virtualenv Setup

Based on:

• https://gist.github.com/pandafulmanda/730a9355e088a9970b18275cb9eadef3
• https://medium.com/@miqui.ferrer/the-ultimate-guide-to-managing-python-virtual-environments-in-macos-c8cb49bf0a3c

Requirements

xcode

xcode-select --install

Homebrew

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

Installation

To install required components

brew install openssl readline sqlite3 xz zlib tcl-tk pyenv pyenv-virtualenv

Configure zshrc

echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.zshrc
echo 'eval "$(pyenv init -)"' >> ~/.zshrc
echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.zshrc
source ~/.zshrc

Check that everything works with pyenv --help

Usage

Install python versions with pyenv install x.y.z. Using pyenv allows you to install multiple version from different vendors. Use pyenv install -l to list all available versions (including regular, anaconda and stackless versions)

Create a virtual environment with pyenv virtualenv 3.9.18 new-venv Activate environment with pyenv activate new-venv and deactivate with pyenv deactivate

Closing notes

• About Virtualenv
• A good collection of .gitignore files, including a Python one ;)