Python

Python Introduction

Sai info solution provide the project development and training. We developed project for BE/ME/PhD. Python is a widely used general-purpose, high level programming language. It was initially designed by Guido van Rossum in 1991 and developed by Python Software Foundation. It was mainly developed for emphasis on code readability, and its syntax allows programmers to express concepts in fewer lines of code.Python is a programming language that lets you work quickly and integrate systems more efficiently. There are two major Python versions- Python 2 and Python 3. Both are quite different.

Python is a powerful modern computer programming language. It bears some similarities to Fortran, one of the earliest programming languages, but it is much more powerful than Fortran. Python allows you to use variables without declaring them (i.e., it determines types implicitly), and it relies on indentation as a control structure. You are not forced to define classes in Python (unlike Java) but you are free to do so when convenient. Python was developed by Guido van Rossum, and it is free software. Free as in “free beer,” in that you can obtain Python without spending any money. But Python is also free in other important ways, for example you are free to copy it as many times as you like, and free to study the source code, and make changes to it. There is a worldwide movement behind the idea of free software, initiated in 1983 by Richard Stallman.1 This document focuses on learning Python for the purpose of doing mathematical calculations. We assume the reader has some knowledge of basic mathematics, but we try not to assume any previous exposure to computer programming, although some such exposure would certainly be helpful. Python is a good choice for mathematical calculations, since we can write code quickly, test it easily, and its syntax is similar to the way mathematical ideas are expressed in the mathematical literature. By learning Python you will also be learning a major tool used by many web developers.

 What is Python?

Python is a popular programming language. It was created in 1991 by Guido van Rossum.

It is used for:

• web development (server-side),
• software development,
• mathematics,
• system scripting.

What can Python do?

• Python can be used on a server to create web applications.
• Python can be used alongside software to create workflows.
• Python can connect to database systems. It can also read and modify files.
• Python can be used to handle big data and perform complex mathematics.
• Python can be used for rapid prototyping, or for production-ready software development.

Why Python?

• Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
• Python has a simple syntax similar to the English language.
• Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
• Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
• Python can be treated in a procedural way, an object-orientated way or a functional way.

Good to know

• The most recent major version of Python is Python 3,However, Python 2, although not being updated with anything other than security updates, is still quite popular.
•  will be written in a text editor. It is possible to write Python in an Integrated Development Environment, such as Thonny, Pycharm, Net beans or Eclipse which are particularly useful when managing larger collections of Python files.

Installing

Python: Version 3.6.2

The Python download requires about 30 Mb of disk space; keep it on your machine, in case you need to re-install Python. When installed, Python requires about an additional 90 Mb of disk space.

1.     Download Python 3.6.2 

2.     Double-click the icon labeling the file python-3.6.2.exe.

An Open File - Security Warning pop-up window will appear.

•    Click Run.   A Python 3.6.2 (32-bit) Setup pop-up window will appear.

Ensure that the Install launcher for all users (recommended) and the Add Python 3.6 to PATH checkboxes at the bottom are checked.

If the Python Installer finds an earlier version of Python installed on your computer, the Install Now message will instead appear as Upgrade Now (and the checkboxes will not appear).

•  Highlight the Install Now (or Upgrade Now) message, and then click it.A User Account Conrol pop-up window will appear, posing the question Do you want the allow the following program to make changes to this computer?
  

• Click the Yes button. A new Python 3.6.2 (32-bit) Setup pop-up window will appear with a Setup Progress message and a progress bar.
  

• During installation, it will show the various components it is installing and move the progress bar towards completion. Soon, a new Python 3.6.2 (32-bit) Setup pop-up window will appear with a Setup was successfuly message.

• Click the Close button.Python should now be installed.

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