Simple File Processor

A Python program that reads a file, adds line numbers, converts to uppercase, and writes to a new file.

Features

• Read text files with error handling
• Add line numbers and convert to uppercase
• Write modified content to new file
• Simple command-line interface
• Clean, minimal output
• Configurable settings
• Comprehensive error handling

Project Structure

├── file_processor.py    # Main program
├── config.py            # Configuration constants
├── test_processor.py    # Test script
├── sample_text.txt      # Sample input file
├── requirements.txt     # Dependencies
└── README.md           # This file

Usage

Main Program

python file_processor.py

1. Enter filename when prompted
2. Content is processed automatically (line numbers + uppercase)
3. New file created with "_modified" suffix
4. Enter 'quit' or 'q' to exit

Test Script

python test_processor.py

Runs automated tests to verify functionality.

Example

File Processor
====================

Enter filename (or 'quit' to exit): sample_text.txt
Successfully processed 'sample_text.txt' -> 'sample_text_modified.txt'

Enter filename (or 'quit' to exit): quit
Goodbye!

Configuration

Edit config.py to customize:

• File encoding
• Output file suffix
• Line number formatting
• User interface messages

Testing

Try these scenarios:

• sample_text.txt (valid file)
• Non-existent file (error handling)
• Empty input or 'quit' to exit

Learning

Demonstrates:

• File I/O operations with encoding
• Error handling with try-catch
• List comprehensions
• Function design and separation of concerns
• Configuration management
• Clean user interface design
• Modular code structure