Error Handling and Logging

Production scrapers must handle errors gracefully and provide visibility into their operation through logging.

Common Scraping Errors

Try/Except Patterns

Retry Logic

Using tenacity Library

Setting Up Logging

Logging to Files

Logging Scraped Items

Error Recovery

Complete Robust Scraper

Key Takeaways

• Catch specific exceptions before general ones
• Implement retry logic with exponential backoff
• Use tenacity library for sophisticated retry behavior
• Set up logging to both file and console
• Log progress, successes, and failures
• Save checkpoints for long-running scrapers
• Track failed URLs for retry
• Build reusable robust scraper classes