Brew multiple versions of Python

gistfile1.md

The brew versions command has been removed. The instructions are no longer valid.

Prerequisites

Make sure you don't have any Python 3.x installed:

$ brew uninstall python3

Then cd into your brew directory, this is /usr/local normally:

$ cd /usr/local

Then list all the available Python 3.x versions in Homebrew:

$ brew versions python3

Python 3.0

Sorry, not available with Homebrew.

Python 3.1

$ git checkout 0476235 Library/Formula/python3.rb
$ brew install python3
$ brew unlink python3
$ ln -s /usr/local/Cellar/python3/3.1.3/bin/python3.1 /usr/local/bin/python3.1

Python 3.2

$ git checkout 0f4a4af Library/Formula/python3.rb

This formula requires sqlite. In case it doesn't work or you don't want it installed, replace this line:

  depends_on 'sqlite'   => :optional  # Prefer over OS X's older version

by this:

  depends_on 'sqlite' => :build

Then install as usual:

$ brew install python3
$ brew unlink python3
$ ln -s /usr/local/Cellar/python3/3.2.3/bin/python3.2 /usr/local/bin/python3.2

Python 3.3

$ git checkout fedb343 Library/Formula/python3.rb
$ brew install python3
$ brew unlink python3
$ ln -s /usr/local/Cellar/python3/3.3.5/bin/python3.3 /usr/local/bin/python3.3

Python 3.4

$ git checkout 7d8b04c Library/Formula/python3.rb
$ brew install python3
$ brew unlink python3
$ ln -s /usr/local/Cellar/python3/3.4.3/bin/python3.4 /usr/local/bin/python3.4

Python 3.5

$ git checkout HEAD Library/Formula/python3.rb
$ brew install python3