Python Hello World Program with Step-by-Step Guide

The "Hello, World!" program is the most basic and traditional program used to introduce a new programming language. In this tutorial, you'll learn how to write your first Python Hello World program using a simple and beginner-friendly approach.

Whether you're searching for:

• Hello World for Python

• Python Hello World Program

• or simply how to start coding with Python Language Hello World,

you’re in the right place!

Let’s get started with a hands-on code example that includes step-by-step comments and user-friendly input/output styles.

 

Hello World Program in Python

# It's the main function of the program
def main():
    # Step-1 Display a welcome message to the user
    print("PYTHON HELLO WORLD PROGRAM")

    # Step-2 Print the actual Hello World message
    print("HELLO, WORLD!")

# Call the main() function to execute the program
main()

Run

Output

 

Explanation:

Let’s break down this Python program for Hello World step by step:

1. Defining the main() Function
   Python doesn’t require a main function, but using one helps in organizing your code neatly.

2. Using print() Function
   The print() function is a built-in Python function that outputs text to the screen. We used it twice:

   • To display a label: "PYTHON HELLO WORLD PROGRAM"

   • To display the actual message: "HELLO, WORLD!"

3. Calling main()
   At the end, we invoke the main() function to execute the code.

 

Step-by-Step Breakdown

1 - Define the main function:

def main():

This sets up the primary function where the program's main logic resides.

2 - Display a label message:

print("PYTHON HELLO WORLD PROGRAM")

Provides context to the user about the program's purpose.

3 - Print the actual Hello World message:

print("HELLO, WORLD!")

Outputs the traditional greeting to the console.

4 - Invoke the main function:

main()

Starts the program by calling the main() function.

 

Why Start with a Hello World in Python?

The Hello World for Python serves as a foundational stepping stone. It helps beginners:

• Understand syntax

• Learn how Python executes code

• Familiarize themselves with printing output

 

Congratulations! You've successfully written and run your first Python Hello World Program. This is your first step into the world of programming with Python. Keep practicing and build your skills one small program at a time.

If you’re looking for more beginner-friendly tutorials on Python language Hello World examples, stay tuned for more hands-on guides!

Another examples given here in various languages:
 

Hello World Program in C

// HELLO WORLD PROGRAM IN C USING MAIN FUNCTION
#include <stdio.h>

// It's the main function of the program
int main()
{
    // Step-1 Display a label message
    printf("C HELLO WORLD PROGRAM\n");

    // Step-2 Print the actual Hello World message
    printf("HELLO, WORLD!\n");

    return 0;
}

Run

 

Hello World Program in C++

// HELLO WORLD PROGRAM IN C++ USING MAIN FUNCTION
#include <iostream>
using namespace std;

// It's the main function of the program
int main()
{
    // Step-1 Display a label message
    cout << "C++ HELLO WORLD PROGRAM" << endl;

    // Step-2 Print the actual Hello World message
    cout << "HELLO, WORLD!" << endl;

    return 0;
}

Run

 

Hello World Program in Java

// HELLO WORLD PROGRAM IN JAVA USING MAIN METHOD
// Java java.util.Scanner package
// Java System.out.println() function
// Java main() method

import java.util.Scanner;

public class Main {
    // It's the main function of the program
    public static void main(String[] args) {
        // Step-1 Display a label message
        System.out.println("JAVA HELLO WORLD PROGRAM");

        // Step-2 Print the actual Hello World message
        System.out.println("HELLO, WORLD!");
    }
}

Run

 

Hello World Program in C#

// HELLO WORLD PROGRAM IN C# USING MAIN FUNCTION
using System;

public class W3CW
{
    // It's the main function of the program
    static public void Main(string[] args)
    {
        // Step-1 Display a label message
        Console.WriteLine("C# HELLO WORLD PROGRAM");

        // Step-2 Print the actual Hello World message
        Console.WriteLine("HELLO, WORLD!");
    }
}

Run

 

Hello World Program in PHP

<?php
// HELLO WORLD PROGRAM IN PHP USING ECHO STATEMENT
// It's the main function of the program
function main()
{
    // Step-1 Display a label message
    echo "PHP HELLO WORLD PROGRAM\n";

    // Step-2 Print the actual Hello World message
    echo "HELLO, WORLD!\n";
}

// Call the main() function to execute the program
main();
?>

Run

 

Hello World Across Languages

Language	Code Structure	Output Method	Entry Point
Python	Function/Class	print()	main()
C	Function	printf()	main()
C++	Function	cout	main()
Java	Class & Method	System.out.println()	main()
C#	Class & Method	Console.WriteLine()	Main()
PHP	Function	echo	main()

 

FAQs

Q1: Why use a main() function in Python?

A: While not mandatory in Python, using a main() function enhances code organization and readability, especially in larger programs.

Q2: Can I write a Python program without defining functions?

A: Yes, for simple scripts, you can write code without functions. However, functions are recommended for better structure and reusability.

Q3: What is the purpose of the print() function?

A: The print() function outputs messages to the console, allowing you to display information to the user.

Q4: How do I run a Python program?

A: Save your code in a .py file and run it using the command python filename.py in your terminal or command prompt.

 

Language-Specific Detailed Articles

For more in-depth tutorials on writing a "Hello, World!" program in different languages, check out the following articles:

• C Hello World Program

• C++ Hello World Program

• Java Hello World Program

• C# Hello World Program

• PHP Hello World Program