Python File & Exception Handling | Try-Except, Open, Write, Read Explained | Day15

📘 Welcome to Day 15 of the Python Programming Series by PerlBabu!

In this final core session, we’re combining two essential Python concepts: File Handling and Exception Handling. These skills are must-have for any serious developer aiming to work with data, automation, or building real-time projects.

🔍 What You’ll Learn Today:
📂 File Handling

Open, Read, Write, Append files

File modes ('r', 'w', 'a', 'x')

Using with open() for safer file operations

read(), readline(), writelines(), seek(), and tell()

⚠️ Exception Handling

What are exceptions and how to catch them

Using try, except, else, finally

Handling specific vs generic exceptions

Raising custom exceptions

Real-world examples (e.g., file not found, input validation)

💡 Use Cases Covered:
Logging to a file

Reading data and handling file errors

Wrapping risky code with exception blocks

Writing error-free automation scripts

🎯 Perfect For:
Students preparing for interviews

Python project builders

Anyone working with files or APIs

Beginners needing real-world understanding

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[SirishaVinnakota-hfms]

In this session I learnt about
1.Another syntax to read and write data to the file using with open() syntax, using this with open() if we open a file, then no need to close the file manually it automatically close the file.
2. How to use seek() and try() methods. How to move cursor position in between or beginning of the file using seek() method. How to identify current cursor position using try() method with best practical examples.
3.About write or append operation: in this topic I learnt about File modes(w, w+, a, a+) and File operations i.e fo.write(), fo.writelines() with examples.
4. About 2 types of Errors.i.e
4.1.Compilation Errors: Human made errors i.e our responsibility to fix it.
4.2. Runtime Errors: we can handle these errors with exception handling, instead of stopping the program, we write code to continue the program with try and except syntax.