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Introduction to Python

Overview What is Python? History Developers of Python Why Python? Current Development in Python Carrier in Python How to Develop program in Python Installing & Running Python

What is Python? A programming language with powerful typing and object oriented features. General Purpose Language Clean Syntax Easy to Learn Easy to Debug “Natural Feeling” Interpreted No Compilation Phase Multiplatform Integration

A Brief History of Python Invented in the Netherlands, early 90s by Guido van Rossum Open sourced from the beginning- Python is copyrighted, Python source code is now available under the GNU General Public License (GPL). Considered a scripting language. Scalable, object oriented and functional from the beginning Used by Google from the beginning Increasingly popular

Python’s Benevolent Dictator For Life “Python is an experiment in how much freedom programmers need. Too much freedom and nobody can read another's code” - Guido van Rossum

Why Python? Natural Language ToolKit Less Code is Better - A task that requires an average of twenty lines of code in C and seven in Java can often be done with just one line in Python. Ease of use; interpreter GUI Programming - Python supports GUI applications. Python has strong numeric processing capabilities: matrix operations, etc. Suitable for probability and machine learning code.

Success stories of Python Tarek Ziadé – member of the Mozilla Service Team, on the reasons for success. The Firefox Sync Server, which is used to synchronize bookmarks, browsing histories, passwords, and open tabs on different computers and mobile devices, was also written in Python.

How to develop program in Python

IDLE Development Environment Windows Installation: Here is the step to install Python on Windows machine: Open a Web browser and go to http://www.python.org/download/ Install python 2.7.8 version, you will be having IDLE 2.7.8 editor with IDLE shell to run your program of python Python shell with syntax highlighting. Your python program will be saved with .py extension Text editor with color-coding and smart indenting for creating python files.

Editor for Python IDLE is an Integrated Development Environment for Python, typically used on Windows Python 2.7.8 is a IDLE (editor) where user writes a program.

Python editor Pyshell is used to run the program i.e. where your program executes which we have written in IDLE 2.7.8 editor. It looks like:

Another Way: Pyscripter Another way install Pyscriper editor which is specially designed for windows. PyScripter is a free and open-source Python Integrated Development Environment (IDE).

Pyscripter

Some Features of Pyscripter Syntax Highlighting Editor Brace Highlighting Code completion and call tips Code and debugger hints Syntax checking as you type Side-by-side file editing

1) Addition Program >>> width = 20 >>> height = 5*9 >>> width + height 900 2) print ‘hello’ 3)a = ‘hello’ print = a 4) word = 'Help' + 'A' 5) s = 'supercalifragilisticexpialidocious' len (s)

9552811938, 9604922180 Mangesh Bharati 6) while b < 10: ... print b ... a, b = b, a+b ... 1 1 2 3 5 8 7) >>> i = 256*256 >>> print 'The value of i is', i The value of i is 65536 9552811938, 9604922180 Mangesh Bharati