Professional Division Calculator with Logging

Overview

This project is a Python-based division calculator designed with professional logging and exception handling practices. The application safely performs division operations while recording all important events, errors, and user interactions into a log file.

The project demonstrates:

• Logging in Python
• Exception handling
• Input validation
• File-based log management
• Debugging practices used in real-world applications

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Features

• Accepts decimal and integer inputs

• Prevents crashes using exception handling

• Detects invalid user input

• Handles division-by-zero safely

• Stores logs with timestamps

• Uses multiple logging levels:

  • DEBUG
  • INFO
  • WARNING
  • ERROR
  • CRITICAL

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Technologies Used

• Python 3
• Built-in logging module

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Project Structure

project/
│
├── keylogger.py
├── my_application.log
└── README.md

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Logging Levels Used

Level	Purpose
DEBUG	Stores raw user input
INFO	Tracks normal application flow
WARNING	Logs invalid user actions
ERROR	Logs division by zero
CRITICAL	Logs unexpected crashes

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Example Log Output

2026-06-12 20:15:01 - INFO - Application started.
2026-06-12 20:15:05 - DEBUG - Raw input for 'a': '10'
2026-06-12 20:15:08 - DEBUG - Raw input for 'b': '2'
2026-06-12 20:15:08 - INFO - Successful calculation: 10 / 2 = 5.0

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Concepts Learned

• Python logging configuration
• Error handling using try-except
• Safe user input validation
• Professional debugging techniques
• Writing structured application logs

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Future Improvements

• Add support for more mathematical operations
• Create a GUI version
• Export logs to CSV
• Add colored terminal output
• Implement user authentication

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Educational Purpose

This project was developed for learning and internship practice purposes to understand how professional applications manage logs, debugging, and runtime errors.