PYTHON BASICS AND c CODING EXAMPLES: PROGRAMMING FOR BEGINNERS

PYTHON BASICS

AND

C# CODING EXAMPLES

PROGRAMMING FOR BEGINNERS

J KING

PYTHON INTRODUCTION

PYTHON HISTORY AND VERSIONS

FIRST PYTHON PROGRAM

PYTHON VARIABLES

PYTHON DATA TYPES

PYTHON KEYWORDS

PYTHON LITERALS

PYTHON OPERATORS

PYTHON COMMENTS

PYTHON IF-ELSE STATEMENTS

PYTHON LOOPS

PYTHON FOR LOOP

PYTHON WHILE LOOP

PYTHON BREAK STATEMENT

PYTHON CONTINUE STATEMENT

PYTHON STRING

PYTHON TUPLE

C# | PRINT MESSAGES/TEXT (PROGRAM TO PRINT HELLO WORLD)

C# PROGRAM TO PRINT A NEW LINE

C# PROGRAM TO PRINT SIZE OF VARIOUS DATA TYPES

TYPE CONVERSION FROM DOUBLE TO INT IN C# PROGRAM

DEFINE VARIOUS TYPES OF CONSTANTS

C# PROGRAM TO DEMONSTRATE EXAMPLE OF ARITHMETIC OPERATORS

PROGRAM TO DEMONSTRATE EXAMPLE OF BITWISE OPERATORS

PROGRAM TO DEMONSTRATE EXAMPLE OF RELATIONAL OPERATORS

FIND THE ADDITION OF TWO INTEGER NUMBERS

PROGRAM TO SWAP TWO NUMBERS

PROGRAM TO DEMONSTRATE EXAMPLE OF SIMPLE IF ELSE STATEMENT

EXAMPLE OF MULTIPLE IF ELSE STATEMENT

C# PROGRAM OF CONDITIONAL OPERATOR

C# PROGRAM EXAMPLE OF SWITCH STATEMENT

C# PROGRAM TO FIND LARGEST OF TWO NUMBERS

PRINT NUMBERS FROM 1 TO 15 USING WHILE LOOP

PRINT NUMBERS FROM 1 TO 15 USING DO WHILE LOOP

PROGRAM TO FIND OUT THE PRIME NUMBERS AMONG 2 TO 30

PYTHON

BASICS

PROGRAMMING FOR BEGINNERS

J KING

PYTHON INTRODUCTION

Python is a programming language that is general purpose, dynamic , high level, and interpreted. To develop

applications, it supports Object-Oriented programming approach. Learning is simple and easy, and provides lots of

high-level data structures.

Python is yet a powerful and versatile scripting language that is easy to learn, making it attractive for application

development.

With its interpreted nature, Python's syntax and dynamic typing make it an ideal language for scripting and quick

application development.

Python supports multiple styles of programming including object-oriented, imperative, and functional or procedural

styles.

Python is not intended to operate in a given area, such as web programming. This is why it is known as the language

of multipurpose programming because it can be used with web, enterprise, 3D CAD etc.

We don't have to use data types to declare variable because it's typed dynamically so that we can write a=10 to

assign an integer value in an integer variable.

Python Features

Python makes the development and debugging fast because the compilation step is not included in the development

of Python, and the edit-test-debug cycle is very fast.

Compared with other programming languages Python is easy to learn. Its syntax is direct and much the same as the

English language. The semicolon or curly-bracket is not used, and the indentation defines the block of code. It is the

recommended language for beginners in the programming.

Using a few lines of code Python can perform complex tasks. A simple example, you simply type print("Hello

World”) to the hello world program. It'll take one line to execute, while Java or C will take multiple lines.

Python History and Versions

Guido Van Rossum at CWI in The Netherlands began implementing Python in December 1989.

Guido Van Rossum published the code (labeled version 0.9.0) to alt.sources in February 1991.

Python 1.0 was released in 1994, with new features such as lambda, map, filter, and reduce.

Python 2.0 has added new features such as list understandings and garbage collection systems.

Python 3.0 (also called "Py3 K") was released on December 3, 2008. It had been designed to correct the language's

fundamental flaw.

Python Version List

Python

Version

Released

Date

Python 1.0 January 1994

Python 1.5 December 31, 1997

Python 1.6 September 5, 2000

Python 2.0 October 16, 2000

Python 2.1 April 17, 2001

Python 2.2 December 21, 2001

Python 2.3 July 29, 2003

Python 2.4 November 30, 2004

Python 2.5 September 19, 2006

Python 2.6 October 1, 2008

Python 2.7 July 3, 2010

Python 3.0 December 3, 2008

Python 3.1 June 27, 2009

Python 3.2 February 20, 2011

Python 3.3 September 29, 2012

Python 3.4 March 16, 2014

Python 3.5 September 13, 2015

Python 3.6 December 23, 2016

Python 3.7 June 27, 2018

Python 3.8 October 14, 2019

To download the latest Python release, please visit the link https:/www.python.org/downloads/

First Python Program

In this section, we 're going to discuss Python 's basic syntax, and run a simple program to print Hello World on the

console.

Python provides us with two modes of running a program:

Using Interactive interpreter prompt

Using a script file

Interactive interpreter prompt

Python gives us the functionality to execute the Python statement at the interactive prompt one by one. In the case

where we are concerned about the output of every line of our Python programme.

Open the terminal (or command prompt) and type python (python3, if you have both Python2 and Python3 installed

on your system) .

It will open the following prompt where we can execute the statement in Python and check its impact on the console.

Using a script file

The interpreters prompt is good at running the individual code statements. We can't write the code on the terminal

anytime .

Our code must be written into a file that can be executed later. To do this, open a notepad editor, create a file named

first.py (Python used the.py extension) and write the following code into it.

print ("hello world"); #here, we have used print() function to print the message on the console.

Run the following command on the terminal

$ python3 first.py