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Mirza-Samad-Ahmed-Baig
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Problem

The codebase had several critical issues that could cause runtime failures and poor production practices:

  1. Schema Transformation Bugs: The transform_schema function in scrapegraphai/utils/schema_trasform.py was vulnerable to KeyError exceptions when processing malformed or incomplete Pydantic schemas, lacking proper error handling for missing keys.

  2. Poor Logging Practices: The SmartScraperGraph class used print() statements instead of proper logging, which is inappropriate for production environments and headless execution.

  3. Typos: Documentation contained typos that reduced code quality ("trasfrom" instead of "transforms").

Solution

  • Added comprehensive error handling to prevent KeyError exceptions in schema processing
  • Implemented proper logging using Python's logging module instead of print statements
  • Added fallback values for malformed array items and missing schema references
  • Improved input validation with proper error messages for invalid schemas

Changes Made

  1. scrapegraphai/utils/schema_trasform.py:

    • Fixed typo in docstring: "trasfrom" → "transforms"
    • Added null checks for items, $defs, and reference keys
    • Added fallback values for missing references and malformed arrays
    • Added validation for required schema structure with descriptive error messages
  2. scrapegraphai/graphs/smart_scraper_graph.py:

    • Replaced print() statements with proper logger.info() and logger.warning()
    • Added response structure validation before logging
    • Imported and configured logging module
  3. scrapegraphai/utils/__init__.py:

    • Added documentation comment noting the filename typo for future reference

Impact

  • Prevents runtime crashes from malformed schema processing
  • Improves production readiness with proper logging practices
  • Better error handling with graceful fallbacks
  • Enhanced debugging with structured logging instead of print statements
  • Maintains backward compatibility while fixing critical bugs

Type of Change

  • Bug fix (non-breaking change which fixes an issue)
  • Code quality improvement
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)

- Fixed typo in docstring (trasfrom -> transforms)
- Added comprehensive error handling for missing schema keys
- Added fallback values for malformed array items and missing references
- Improved logging in SmartScraperGraph (replaced print with logger)
- Added proper validation for pydantic schema structure

These fixes prevent KeyError exceptions and improve production reliability.
@dosubot dosubot bot added size:M This PR changes 30-99 lines, ignoring generated files. bug Something isn't working typo typo labels Jul 25, 2025
@VinciGit00
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@Mirza-Samad-Ahmed-Baig thank you

@dosubot dosubot bot added the lgtm This PR has been approved by a maintainer label Aug 13, 2025
@VinciGit00 VinciGit00 merged commit e65da4d into ScrapeGraphAI:main Aug 13, 2025
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🎉 This PR is included in version 1.62.0 🎉

The release is available on:

Your semantic-release bot 📦🚀

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