How to Getting Started With Python 3.X Virtual Environments on Mac OS X 10.10 Yosemite Easy Guide

December 6, 2014 | By the+gnu+linux+evangelist.

Python 3 Virtualenv/Virtualenvwrapper macOS Quick Start

The Unix Tutorial shows you Step-by-Step How to Install and Getting-Started with Python 3.x/2.x Virtualenv and Virtualenvwrapper for macOS 10.10 Yosemite Unix/BSD.

A Virtualenv Environment, put simply, is an isolated working copy of Python which allows you to work on a specific project without worry of affecting other projects.

The Virtualenvwrapper include wrappers for creating and deleting virtual environments and otherwise managing your development workflow, making it easier to work on more than one project at a time without introducing conflicts in their dependencies.

Getting-Started Virtualenv/Virtualenvwrapper Python 3 on macOS 10.10 Yosemite - Featured
  1. Open a Command Line Terminal Window
    Applications > Utilities > Terminal
    (Press “Enter” to Execute Commands)

    Virtualenv/Virtualenvwrapper Python 3 Quick Start for macOS 10.10 Yosemite - Open Terminal
  2. Getting-Started with Python 3 on macOS Yosemite

    Python 3 Quick Start for macOS
  3. Installing Virtualenv+Virtualenvwrapper Python 3.

    sudo pip3 install virtualenvwrapper
  4. Initial Virtualenv SetUp.

    nano $HOME/.profile

    Append:

    export WORKON_HOME=~/Envs/nexport VIRTUALENVWRAPPER_PYTHON=/usr/local/homebrew/bin/python3
    

    Ctrl+x to Save & Exit from ‘nano’ Editor :)

    source $HOME/.profile
    source /usr/local/homebrew/bin/virtualenvwrapper.sh

    Then you Dispose of 2 Virtualenv Versions: ‘virtualenv’ for Python 3.x and ‘virtualenv-2.x’ for Python 2.x :)
    To Show Up:

    ls -l /usr/local/homebrew/bin | grep virtualenv
  5. To Make a Python Virtual Environmnet.

    mkvirtualenv test
  6. To List All the Existing Virtual Environments.

    ls $WORKON_HOME
  7. To Switch the Virtual Environmnet.

    mkvirtualenv essai
    workon test

    Show the Working Virtual Env:

    echo $VIRTUAL_ENV
  8. To Install Software into the Virtual Environmnet.

    For Example:

    pip3 install django
  9. To List All the Virtual Environmnet Packages.

    lssitepackages
  10. To Automatically Run a Command after Environment Creation.

    echo '[sh-command]' > $WORKON_HOME/postactivate

    For Instance to Automatically Change to the New Env Directory:

    echo 'cd $VIRTUAL_ENV' > $WORKON_HOME/postactivate
  11. To Automatically Installing Commonly Used Tools.

    echo 'pip3 install [myGoodTool]' > $WORKON_HOME/postmkvirtualenv

    For Example:

    echo 'pip3 install sphinx' > $WORKON_HOME/postmkvirtualenv

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