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Welcome to Dr. Sourav Sir’s Classes – your go-to destination for learning Python, Programming, Mathematics, and Data Science in a clear and practical way. In today’s session, we will focus on one of the most important concepts in Python programming:

👉 How to Append to a File and Read it Line by Line in Python

Working with files is a crucial skill for any programmer. Whether you are handling logs, writing reports, or managing datasets, you must know how to append new data to a file and then read the file line by line efficiently. This topic is especially useful for coding assignments, exams, and interview questions.

📌 What You Will Learn in This Video

Introduction to file handling in Python.

Difference between file modes: r (read), a (append), and w (write).

Using with open() for safe and clean file handling.

How to append new content to a file without overwriting existing data.

Reading a file line by line using:

for loop iteration.

readline() method.

readlines() method.

Practical demonstration of writing, appending, and reading files.

Handling errors and exceptions in file operations.

Real-world applications:

Adding entries to logs or reports.

Managing student data, marks, or user records.

Processing large text files efficiently.

By the end of this video, you will master appending and reading files line by line in Python with ease.

🌟 Why This Topic MattersFile handling is an essential part of software development. Learning how to append and read files helps you:

Work with persistent data storage.

Handle logs, reports, and datasets in real-world projects.

Prepare for coding interviews where file I/O questions are common.

Build strong foundations for advanced tasks like CSV handling, JSON parsing, and database management.

🎯 Who Should Watch?

Python beginners learning file handling basics.

Students preparing for coding assignments, competitive exams, or interviews.

Developers working on projects requiring persistent data storage.

Anyone who wants to strengthen their Python fundamentals.

🏆 Why Learn With Dr. Sourav Sir’s Classes?

We make coding simple and practical by teaching with step-by-step explanations. With us, you’ll get:

Hands-on coding tutorials with examples.

Problem-solving techniques that link theory with practice.

Exam and interview-focused guidance.

Support for both beginners and advanced learners.

Visit 👉 www.souravsirclasses.com

Call/WhatsApp 📞 9836793076

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Comment below if you’d like us to cover reading and writing CSV or JSON files in Python in upcoming videos



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