Virtual environments, Play safe in small Python Projects !

Written on September 19, 2013

Creating virtual environment for small projects(python)  was new information for me.

This allows you to work on a specific project without worry of affecting other projects.

Let us check how to set up this.

Install pip or easy_install (easy_install and pip are python package installers that will make your life a lot easier when developing in python)

sudo yum install python-pip``

Virtualenv is a tool to create isolated Python environments.

sudo pip install virtualenv virtualenvwrapper

Make a directory to store your virtual environments(depends on your project number :) )

mkdir virtual_env

Create a virtual environment

virtualenv virtual_env/virt1

To start using the virtual environment , you need to activate it.

source virtual_env/virt1/bin/activate

If  you are done with it, you can close it using command

deactivate

To delete a virtual environment, just delete its folder.

To install packages /modules, you can direct installation to the specific environment for  corresponding project. For example

 ~/virtual_env/virt1/bin/pip install requests

 ~/virtual_env/virt1/bin/pip install Django

These steps are with virtualenv . When you have a lot of virtual environments and it is difficult to handle , virtualenvwrapper will help. Install it using your favourite package installer.

Make sure you installed virtualenvwrapper already

source /usr/local/bin/virtualenvwrapper.sh

Create a virtual environment using virtualenvwrapper

mkvirtualenv virt1

This create a virt1 directory in current path.

To work with it:

workon virt1

This will deactivate the environment you are currently in.

 We can use deactivate command here also.

Virtualenvwrapper provides some useful commands to deal with these environments like,

To remove :

rmvirtualenv virt1

To list  :

lsvirtualenv virt1

Explore more commands here

Happy Coding !!!

link: https://rosnikv92.wordpress.com/2013/09/19/play-safe-using-virtual-environments/ author: rosnikv description: post_id: 248 created: 2013/09/19 14:15:06 created_gmt: 2013/09/19 14:15:06 comment_status: open post_name: play-safe-using-virtual-environments status: publish post_type: post

Comments

Soorej Kv: happy coding