🐍 Python Log File Analyzer

A lightweight Python script that scans log files and generates a summary of INFO, WARNING, and ERROR messages. This project demonstrates practical automation skills used in IT, DevOps, and cybersecurity environments.

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🚀 Features

• Counts INFO, WARNING, and ERROR messages
• Extracts and analyzes error messages
• Identifies the most common error
• Fully tested with pytest

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📁 Project Structure

python-log-file-analyzer/
│
├── src/
|   ├── init.py
│   └── log_analyzer.py
│
├── sample_logs/
│   └── system.log
|
├── tests/
|   └── test_log_analyzer.py
|
├── conftest.py
│
└── README.md

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▶️ How to Run

From the project root:

python3 src/log_analyzer.py

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🧪 Sample Output

===== Log File Summary =====
Total INFO messages: 3
Total WARNING messages: 1
Total ERROR messages: 2

Most common error: 'Backup process failed' occurred 1 times

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🧪 Running Tests

To run the full test suite:

pytest -v

📘 Sample Log Format

2024-06-01 12:00:00 INFO User logged in
2024-06-01 12:00:00 ERROR Something broke

Malfromed lines are automatically detected and marked as:

level = 'UNKNOWN"
timestamp = None

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📌 Why This Project Matters

This script demonstrates:

• Python automation
• Log parsing
• Pattern recognition
• Error analysis
• Real‑world IT troubleshooting skills

Perfect for showcasing practical scripting ability on a GitHub portfolio.

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🔧 Future Enhancements

• Export results to CSV
• Add colorized terminal output
• Support for multiple log formats
• Regex‑based filtering
• Add CLI interface
• Add JSON output option
• Add summary export to file