Introduction

It creates a virtual environment to isolate the working copy of the python which allow us to work on the specific project without affecting the system other projects. It helps in working on different version of the packages without affecting the other version. For example you can work on the python2.6 with isolated enviroment with python2.7 on your OS.

Version The latest version of the virtualenv 1.11.6 release on 16 May 14

Installation

You can use pip (python package index) or from source to install the virtualenv

• Open your terminal and type below commands

pip install install virtualenv

• Create virtualenv

virtualenv myapp

• myapp will be your virtualenv which contain 4 directories

  1. bin
  2. include
  3. local
  4. lib

• To enable virtualenv

source bin/activate

• you will find this on your terminal

(myapp)user:myapp$

• To disable virtualenv

(myapp)user:myapp$ deactivate

• To create virtualenv with specific python version

virtualenv -p /usr/bin/python2.6 myapp

Virtual wrapper

It contain set of commands for virtualenv and intregate all your virtualenv at one place. It helps in managaing multiple virtualenv

pip install virtualenvwrapper

export WORKON_HOME=~/myvirtual
source /usr/local/bin/virtualwrapper.sh

mkvirtualenv app
workon app
rmvirtualenv app