What is a Bug in Programming? Explained

When you hear the word “bug,” you might think of a small insect. But in the world of computers and programming, a bug means something very different. In programming, a bug is a mistake or problem in the code that makes a software program behave in the wrong way. Bugs can cause programs to crash, give wrong results, or act strangely. They are one of the most common challenges that programmers face every day. In this ultra-long guide, we will explain everything about programming bugs in simple English so beginners can easily understand what a bug is, why it happens, how it is found, and how to fix it. What is a Bug in Programming? A bug is an error or flaw in a computer program’s code. A program is a set of instructions written by a programmer to tell the computer what to do. If there is a mistake in those instructions, the computer cannot understand or follow them correctly. As a result, the program does not work as expected. For example, if you create a calculator program and make a...
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How to Learn Python from Scratch

If you want to learn programming today, the easiest and most popular language is Python . It is not only easy to learn but you can do many things through it – like web development, data science, artificial intelligence, automation, machine learning, scripting, and much more. In this blog, we will see step-by-step how to learn Python from zero , what resources to use, what projects to work on and how to go from a beginner to an expert.

Why learn Python?
There are many benefits of learning Python:

  • This is a simple and readable language, which even a beginner can understand easily.

  • Python is open-source i.e. it is available for free.

  • It has many libraries and frameworks like Django, Flask, Pandas, NumPy, TensorFlow etc.

  • The demand for Python is increasing very rapidly in the job sector.

Step 1: Start with the Basics
If you are a complete beginner, first install Python on your computer. You can download it from the official website – python.org. After installing, you can write code in any editor like IDLE, PyCharm or VS Code.
Basic concepts that you should learn first:

  • Variables (to store data)

  • Data types (string, integer, float, boolean)

  • Input Output (print function, input function)

  • Operators (+, -, *, / etc.)

Step 2: Learn Control Flow

After this you will have to learn conditions and loops.

If-else statements – for taking decisions

For loop and while loop – for repeating tasks

Break and continue – to control the loop

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Step 3: Understand functions
Functions are very powerful in Python. Functions mean writing code once and using it many times. You will learn:

  • How to define functions (with def keyword)

  • Parameters and arguments

  • Return statement

Step 4: Learn Data Structures
One of the most important things about Python is its data structures. They make coding very easy.

  • List (to store multiple values)

  • Tuple (immutable collections)

  • Dictionary (key-value pairs)

  • Set (unique values collection)

Step 5: File Handling
With Python, you can read and write text files, CSV files, JSON files. This will help you learn to work with data.

Step 6: Object-Oriented Programming (OOPs)
If you want to go to the advanced level, then OOPs is very important. In this you will learn:

  • Classes Objects

  • Inheritance

  • Encapsulation

  • Polymorphism

Step 7: Learn Python Libraries
The real power of Python is in its libraries and frameworks. You can learn libraries according to your interest:

  • For Data Science – Pandas, NumPy, Matplotlib

  • For Machine Learning – TensorFlow, Scikit-learn

  • For Web Development – ​​Django, Flask

  • For Automation – Selenium, PyAutoGUI

Step 8: Make small projects
Programming cannot be learned from theory alone. You have to make small projects:

  • Calculator app

  • To-do list program

  • Weather app

  • Simple blog website

  • Data visualization charts

Step 9: Use Practice Platforms It
is important to practice coding. For this, you can use platforms like LeetCode, HackerRank, Codeforces, W3Schools, GeeksforGeeks.

Step 10: Work on Real-World Projects
Once the basics and small projects are done, try your hand at bigger projects:

  • Web scraping tools

  • Chatbot

  • Machine learning models

  • Full-fledged web applications

Step 11: Use the Community and GitHub
It's very helpful to be connected to a community when learning Python. Share projects on GitHub and read others' code. Join communities like Stack Overflow and Reddit.

Step 12: Continuous Learning
Programming is a skill in which there is always something new to learn. New libraries and tools keep coming in Python every year. So keep an eye on new updates.

Step 12: Continuous Learning

Programming is a skill in which there is always something new to learn. New libraries and tools keep coming in Python every year. So keep an eye on new updates.

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Best Free Resources to Learn Python

  • Official Python Documentation

  • W3Schools Python Tutorial

  • FreeCodeCamp Python Course

  • YouTube पर Corey Schafer, Programming with Mosh

  • GeeksforGeeks Python tutorials

Conclusion
Python is a programming language that is perfect for both beginners and professionals. If you are starting from scratch, first learn the basics, then data structures, then small projects and slowly move on to advanced topics. Practice and patience are the keys to success.

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