Cloud computing Python automation, some of the more famous sites or apps

Are there python apps that are more famous than OpenStack? Some of the following are developed in Python, some of which are used in Python for some business or functionality, and those that support Python as an extended scripting language, mostly from Wikepedia and Quora.

Reddit-Social sharing site, first developed with Lisp and turned into Python in 2005

Dropbox-File Sharing service

Douban-Information Database Web site for books, records, movies and other cultural products

Django-a Web application framework that encourages rapid development

Fabric-Libraries for managing hundreds of thousands of Linux hosts

Eve-Online game Eve is heavily developed using Python

Blender-Open Source 3D drawing software developed in C and Python

BITTORRENT-BT Download Software Client

Ubuntu Software Center-ubuntu 9.10 version comes with a graphical package manager

YUM-Package Manager for RPM-compatible Linux systems

Civilization IV-Game "Civilization 4"

Battlefield 2-game "Battlefield 2"

Google-Google uses python as a backend for web apps in many projects, such as Google Groups, Gmail, Google Maps, etc., Google App engine supports python as a development language

NASA, a major development language since 1994

Industrial Light & Magic-Industrial demon, George Lucas ' creation film effects company

Yahoo! Groups-the group Exchange platform launched

YouTube-video sharing site, using Python on certain features

Cinema 4D-A set of advanced three-dimensional drawing software that integrates 3D models, animations and drawings, and is known for its high-speed operations and powerful rendering plugins

Autodesk maya-3d modeling software that supports Python as a scripting language

Text Editor for Gedit-linux platform

Image processing software for Gimp-linux platform

Minecraft:pi Edition-Raspberry Pi version of game Minecraft

MySQL Workbench-Visual Database management tools

Digg-Social news sharing site

Mozilla-a nonprofit organization established to support and lead the open source Mozilla project

Quora-Social Quiz website

Path-Private social apps

Pinterest-Photo sharing website

SlideShare-Site for slideshow storage, display, sharing

Yelp-US Merchant reviews website

Slide-Social games/app development company, acquired by Google

About Python versions

Official wiki:

Https://wiki.python.org/moin/Python2orPython3

Here is a paragraph from the official wiki, in short, you can use the Python3 3.

What is the differences?

Short Version:python 2.x are legacy, Python 3.x is the present and future of the language

Python 3.0 is released in 2008. The final 2.x version 2.7 release came out in mid-2010, with a statement of extended support for this end-of-life release. The 2.x branch would see no new major releases after that. 3.x is under active development and have already seen over five years of stable releases, including version 3.3 in 2012, 3. 4 in, and 3.5 in 2015. This means is recent standard library improvements, for example, is only available by default in Python 3.x.

Cloud computing Python automation, some of the more famous sites or apps