README.md

🖋️ File Modifier with Error Handling

This Python script reads a user-specified text file, modifies each line by adding a prefix, and writes the updated content to a new file.

🚀 How It Works

1. Asks the user for a filename
2. Adds the prefix [MODIFIED] to every line
3. Writes the modified content to a new file named modified_<original>.txt
4. Handles errors like missing files, permission issues, and unexpected exceptions

🧪 Example

Input file: example.txt

Hello world
Python is awesome

Output file: modified_example.txt

[MODIFIED] Hello world
[MODIFIED] Python is awesome

⚠️ Error Handling

• FileNotFoundError — File doesn't exist
• PermissionError — You don't have permission to access the file
• General Exception — Any unexpected runtime issues

📁 Files

• file_modifier.py — Main script
• README.md — Project documentation
• LICENSE — MIT License

🧑‍💻 Author

Augusto Mate
📧 mate.augusto.mz@gmail.com

🪪 License

This project is licensed under the MIT License.