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Introduction to python

Python is a programming language created by Guido van Rossum in 1991 that combines features of C and Java. It is an open source, high-level, dynamically typed language that is both object-oriented and procedural. Python code is portable, platform independent, and can be integrated with other languages like C and Java. It has a large standard library and is an interpreted, extensible, and scalable scripting language.

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Introduction to Python Prakash G Khaire The Mandvi Education Society Institute of Computer Studies
Introduction • Python is a programming language that combines the features of C and Java. • It was developed by “Guido Van Rossum” in the year 1991 at the centre of Mathematics and Computer Science managed by the Dutch Government. • He was working on a project to develop system utilities in C, to interact with Bourne shell available in Unix.
Introduction • First working version was ready by early 1990 and publicly released on Feb 20, 1991. • It is open source software. • www.python.org
Features of Python • Simple – Program source code makes us feel like reading English sentence. • Easy to learn – Use of very few keywords. • Open source – Freely available along with source code and allow redistribution. • High Level Programming – Uses English words to develop programs.
Features of Python • Dynamically typed – We need not declare anything. An assignment statement binds a name to an object and object can be of any type. • Platform Independent – On compiling its source code it generates byte code. The byte code represents a fixed set of instructions that run on all operating system and hardware. Using Python Virtual Machine (PVM) • Portable – Since it is platform independent, Once a python program is written, it can run on any computer system using PVM. • Procedure and Object Oriented – It is both procedure(uses functions) as well as object oriented programming language(uses classes and object).
Features of Python • Interpreted – A python source code is compiled using python compiler, it translates the into an intermediate code called byte code. • Extensible – One can integrate the programming code of C, C++, Java etc. with python. Ex. Jython is useful to integrate Java code into Python Programs and run on JVM.
Features of Python • Huge Library – Programmers can develop programs very easily using the modules available in the Python library. • Scripting language – A Scripting language is a programming language that does not use a compiler for executing the source code. Rather, it uses an interpreter to translate the source code into machine code. • Database Connectivity – Python provides interfaces to connect its programs to all major databases. • Scalable – Python programs are scalable since they can run on any platform and use the features of the new platform.