Python Introduction To Programming

Python Introduction To Programming

Python is a high-level and interpreted programming language. It is created by Guido van Rossum. Python first released in 1991, Python has a good design philosophy. It provides features like code readability, and a syntax that allows fewer lines of code to implement functionality compare to other programming languages. Python is a general purpose programming language.

History of python

  • Python was conceived in the late 1980s, and its implementation began in December 1989 by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands as a successor to the ABC language (itself inspired by SETL) capable of exception handling and interfacing with the operating system Amoeba.
  • Rossum was fan of a comedy series from late seventies. The name "Python" was taken from the same series "Monty Python's Flying Circus".

Features of Python Programming

  • A simple language which is easier to learn
  • Free and open source Portability (run code in any platform)
  • Extensible and embeddable(c, c++, etc)
  • A high level interpreted language
  • Large standard libraries to solve common problems
  • Supports object oriented programming

Applications of python

  • Web and Internet Development

  • Scientific and Numeric

    • SciPy is a collection of packages for mathematics, science, and engineering.
    • Pandas is a data analysis and modeling library.

  • Education

  • Desktop GUIs

  • Software Development

    • Python used as a supporting language for software developers along with other programming languages.
    • Python is used in automation of software processes.
    • Also used 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.

  • Business Applications

    • python is used for ERP(enterprice resource planning) and internet e-commerce applications.
    • Odoo offers a range of business applications that form a complete pack of enterprise management applications.
    • Tryton is a high-level general purpose application platform.

Before start programming in python, we have to install python software. To install python software go to https://www.python.org/downloads/ and download and install the python software which is compatible with your operating system.

Python program - "Hello World"

print("Hello World") when we run the above code the python interpreter will give output "Hello World".

What is a program ?

  • A program is a sequence of instructions that tells how to solve a given problem. For example, Finding a square of a number. Basic terminology of programming
  • Input: Get data from the keyboard, a file, or some other device.
  • Math: Perform basic mathematical operations like addition and multiplication.
  • Conditional execution: Check for certain conditions and execute the appropriate sequence of statements.
  • Repetition: Perform some action repeatedly, usually with some variation.
  • Output: Display data on the screen or send data to a file or other device.

When we run any program it takes the input **and **processes the given input and produces the processed output.

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