Day 45: Python File Handling, Errors & Exception Handling Complete Revision |
Welcome to Day 45 of the 100 Days Python Challenge by MRNIRITEACH.
In this video, we complete an important milestone in our Python learning journey by revising three essential topics that every Python programmer should understand: File Handling, Errors, and Exception Handling.
This tutorial is designed for beginners as well as students preparing for exams, interviews, and real-world Python projects. Every concept is explained in simple Nepali with practical coding examples that you can follow along.
By the end of this lesson, you will understand how to permanently store data using files, identify and solve different types of programming errors, and write safer programs using exception handling.
Topics Covered
Introduction to File Handling
Why File Handling is Important
open() Function
File Modes (r, w, a, x, b, t)
Reading Files
Writing Files
Appending Data
with open() Statement
Real World Examples
Syntax Error
Runtime Error
Logical Error
Reading Python Traceback
Debugging Basics
Exception Handling
try Block
except Block
else Block
finally Block
raise Keyword
Mini Notes Manager Project
Revision and Summary
Timestamps
00:00 Introduction
01:40 What is File Handling?
03:30 open() Function
05:30 File Modes Explained
08:30 Reading Files
10:30 Writing and Appending Files
13:00 Real World Examples
15:00 Types of Errors
16:30 Syntax Error
17:30 Runtime Error
18:30 Logical Error
20:00 Traceback and Debugging
22:00 Exception Handling
24:00 try and except
26:00 else and finally
28:30 raise Keyword
30:30 Practical Mini Project
34:30 Complete Revision
36:30 Interview Tips
37:30 Summary
Resources
YouTube Channel
/ @mrniriteach
Python 100 Days Challenge Playlist
• 100 Days Python Challenge 💯 | Zero to Hero
GitHub Profile
https://github.com/mrniriteachai-eng
Python Learning Repository
https://github.com/mrniriteachai-eng/...
100 Days Python Challenge Repository
https://github.com/mrniriteachai-eng/...
LinkedIn
/ nirmal-saud-a850193a0
NumPy Complete Course
• NumPy Full Course Series 🔥
Pandas Complete Course
• Pandas Universe 🚀 | Full Course, Practice ...
Matplotlib Complete Course
• Visualize Like an AI Engineer ⚡ | Matplotl...
About This Series
The 100 Days Python Challenge is a complete Python learning series where we learn Python from absolute beginner level to advanced concepts through practical coding, revision sessions, projects, and interview-oriented explanations.
If you are following this challenge regularly, make sure to practice every example shown in this video and download the notes and source code from GitHub.
In the next video, Day 46, we will start learning Modules and Packages, an important step toward writing professional and reusable Python programs.
If you found this tutorial helpful, consider subscribing to MRNIRITEACH and continue learning Python with us.
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