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@pithyless
Created September 10, 2011 21:49
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Install Python 2.7 (homebrew + pip + virtualenv) on Mac OS X Lion

Install Python

$ brew install readline sqlite gdbm
$ brew install python --universal --framework
$ python --version
Python 2.7

Symlinks...

$ mkdir ~/Frameworks
$ ln -s "/usr/local/Cellar/python/2.7.2/Frameworks/Python.framework" ~/Frameworks
$ /usr/local/share/python/easy_install pip
$ /usr/local/share/python/pip install --upgrade distribute

Add to .bashrc:

# Before other PATHs...
PATH=${PATH}:/usr/local/share/python

# Python
export WORKON_HOME=$HOME/.virtualenvs
export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python2.7
export VIRTUALENVWRAPPER_VIRTUALENV_ARGS='--no-site-packages'
export PIP_VIRTUALENV_BASE=$WORKON_HOME
export PIP_RESPECT_VIRTUALENV=true
if [[ -r /usr/local/share/python/virtualenvwrapper.sh ]]; then
    source /usr/local/share/python/virtualenvwrapper.sh
else
    echo "WARNING: Can't find virtualenvwrapper.sh"
fi

Install virtualenv

$ pip install virtualenv 
$ pip install virtualenvwrapper

Test setup

$ mkvirtualenv test 
$ rmvirtualenv test
@sbrieuc
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sbrieuc commented Aug 6, 2013

I had to change from:

    if [[ -r /usr/local/share/python/virtualenvwrapper.sh ]]; then
        source /usr/local/share/python/virtualenvwrapper.sh

to

    if [[ -r /usr/local/bin/virtualenvwrapper.sh ]]; then
        source /usr/local/bin/virtualenvwrapper.sh

to make it work, because virtualenvwrapper.sh got installed there.

@the-shank
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Thanks for this.

Just wanted to point out that I had to do this

brew install readline sqlite gdbm --universal

to get it to work

@mistydemeo
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$ brew install python --universal --framework

Homebrew already does dependency resolution - no need for this line!

@shurane
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shurane commented Feb 13, 2014

A lot has changed in homebrew and these instructions are out of date. brew install --universal should take care of most of your problems. Also take a look at brew info python for installation instructions.

@bdejong
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bdejong commented Sep 3, 2014

export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python2.7
if [[ -r /usr/local/bin/virtualenvwrapper.sh ]]; then
    source /usr/local/bin/virtualenvwrapper.sh
else
    echo "WARNING: Can't find virtualenvwrapper.sh"
fi

Also seems to be more recent...

@huanghaihui
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After install python, I find easy_install, virtualenvwrapper.sh and so on in /usr/local/bin not in /usr/local/share/python. just like bdejong shows above.

@yodaqua
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yodaqua commented Apr 15, 2017

still useful, thanks

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