Python is a high-level, interpreted programming language known for its simplicity and readability.

Python is a high-level, interpreted programming language known for its simplicity and readability.

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  BASICS OF PYTHON
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  What is Python..? •Python is a general purpose programming language that is often applied in scripting roles. • So, Python is programming language as well as scripting language. • Python is also called as Interpreted language
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  Difference Between Programand scripting language Program • A program is executed (i.e. the source is first compiled, and the result of that compilation is expected) • A program in general, is a sequence of instructions written so that a computer can perform certain task. Scripting • A script is interpreted. • A script is code written in a scripting language. A scripting language is nothing but a type of programming language in which we can write code to control another software application.
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  History • Invented inthe Netherlands, early 90s by Guido van Rossum. • Python was conceived in the late 1980s and its implementation was started in December 1989. • Guido Van Rossum is fan of ‘Monty Python’s Flying Circus’, this is a famous TV show in Netherlands. • Named after Monty Python. • Open sourced from the beginning.
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  Scope of Python Science -Bioinformatics. System Administration -Unix -Web logic -Web sphere Web Application Development -CGI -Jython – Servlets Testing scripts
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  What can Ido with Python…? • System programming. • Graphical User Interface Programming • Internet Scripting • Component Integration • Database Programming • Gaming, Images, XML , Robot and more.
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  Why do people use Python? The followingprimary factors cited by Python users seem to be these:  Python is object-oriented Structure supports such concepts as polymorphism, operation overloading, and multiple inheritance.  It's free (open source) Downloading and installing Python is free and easy Source code is easily accessible.  It's powerful - Dynamic typing - Built-in types and tools - Library utilities - Third party utilities (e.g. Numeric, NumPy, SciPy) - Automatic memory management  It's portable - Python runs virtually every major platform used today - As long as you have a compatible Python interpreter installed, Python programs will run in exactly the same manner, irrespective of platform.
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  Enough to Understandthe Code  Indentation matters to code meaning - Block structure indicated by indentation  First assignment to a variable creates it - Variable types don’t need to be declared. - Python figures out the variable types on its own.  Assignment is = and comparison is ==  For numbers + - * / % are as expected - Special use of + for string concatenation and % for string formatting (as in C’s printf)  Logical operators are words (and, or, not) not symbols.  The basic printing command is print
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  Python Code Execution Python’s traditional runtime execution model: source code you type is translated to byte code, which is then run by the Python Virtual Machine. Your code is automatically compiled, but then it is interpreted.  Source code extension is .py Byte code extension is .pyc (compiled python code)
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  Running Python  Onceyou're inside the Python interpreter, type in commands at will.  Examples: >>> print 'Hello world’ Hello world # Relevant output is displayed on subsequent lines without the >>> symbol >>> x = [0,1,2] # Quantities stored in memory are not displayed by default >>> x # If a quantity is stored in memory, typing its name will display it [0,1,2] >>> 2+3 5
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  A Sample Code X=34-23 #A comment. Y=“Hello” #Another one. Z=3.45 If z==3.45 or Y==“Hello”: X=X+1 Y=Y+ “World” #String Concat. print X print Y
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  THANK YOU