how to install python

DOWNLOAD AND INSTALLATION

GO to https://www.python.org/downloads/  , click on the download link, i will suggest you to install the latest version, after clicking download will start automatically, then install that file which got downloaded. After this it will appear in your start menu as shown below

click on IDLE(Python GUI), you will get a window as shown below

so this is the python shell where you can write programs step by step or you can create a script, further knowledge you will get from how to use python software or click here.

In this link - https://www.python.org/downloads/  find answer to the question 

Should I use Python 2 or Python 3 for my development activity?

you can also get details on the following links

https://wiki.python.org/moin/PortingPythonToPy3k

https://wiki.python.org/moin/PortingExtensionModulesToPy3k

 Here’s more about the difference between Python 2 and 3.

 

Applications for Python

Web and Internet Development

• Python offers many choices for web development:
• Frameworks such as Django and Pyramid.
• Micro-frameworks such as Flask and Bottle.
• Advanced content management systems such as Plone and django CMS.

Python's standard library supports many Internet protocols:

• HTML and XML
• JSON
• E-mail processing.
• Support for FTP, IMAP, and other Internet protocols.
• Easy-to-use socket interface.

And the Package Index has yet more libraries:

• Requests, a powerful HTTP client library.
• BeautifulSoup, an HTML parser that can handle all sorts of oddball HTML.
• Feedparser for parsing RSS/Atom feeds.
• Paramiko, implementing the SSH2 protocol.
• Twisted Python, a framework for asynchronous network programming.

Scientific and Numeric

• Python is widely used in scientific and numeric computing:
• SciPy is a collection of packages for mathematics, science, and engineering.
• Pandas is a data analysis and modeling library.
• IPython is a powerful interactive shell that features easy editing and recording of a work session, and supports visualizations and parallel computing.
• The Software Carpentry Course teaches basic skills for scientific computing, running bootcamps and providing open-access teaching materials.

Education

• Python is a superb language for teaching programming, both at the introductory level and in more advanced courses.
• Books such as How to Think Like a Computer Scientist, Python Programming: An Introduction to Computer Science, and Practical Programming.
• The Education Special Interest Group is a good place to discuss teaching issues.

Desktop GUIs

• The Tk GUI library is included with most binary distributions of Python

Some toolkits that are usable on several platforms are available separately:

• wxWidgets
• Kivy, for writing multitouch applications.
• Qt via pyqt or pyside

Platform-specific toolkits are also available:

• GTK+
• Microsoft Foundation Classes through the win32 extensions

Software Development

• Python is often used as a support language for software developers, for build control and management, testing, and in many other ways.
• SCons for build control.
• Buildbot and Apache Gump for automated continuous compilation and testing.
• Roundup or Trac for bug tracking and project management.