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Collection of different tools for async web scraping, crawling and parsing

Project description

aiofetch

A Python toolkit for asynchronous web scraping with built-in error tracking and metadata management.

Features

Web Processing

  • Asynchronous file downloading with progress tracking
  • Rate limiting with configurable delays
  • Smart retry logic with timeout handling
  • Domain-aware crawling with URL validation

Content Processing

  • Flexible HTML content parsing
  • Custom selector-based metadata extraction
  • Automated link and image extraction
  • URL normalization and path handling

File & Data Management

  • Asynchronous file operations
  • Concurrent chunk-based downloads
  • Smart path handling and file naming
  • JSON data management with validation

Error Handling & Progress Tracking

  • Comprehensive error tracking and reporting
  • Progress monitoring for long operations
  • Detailed logging with configurable outputs
  • Operation statistics and summaries

Metadata Management

  • Efficient in-memory caching
  • Field-based search functionality
  • Automatic metadata indexing
  • Structured data validation

Installation

pip install aiofetch

Key Components

  • AsyncDownloader: Parallel file downloading with progress tracking
  • BatchProcessor: Process items in configurable batches
  • RateLimiter: Control request frequency
  • MetadataExtractor: HTML metadata extraction with custom selectors
  • PathHandler: Path and filename utilities
  • FileIO: Async/sync file operations
  • BaseCrawler: Extensible crawler base class with domain validation
  • LoggerFactory: Enhanced logging with file and console outputs

Requirements

  • Python 3.9+
  • aiofiles
  • aiohttp
  • BeautifulSoup4

Quick start

import asyncio
from aiofetch import (
    AsyncDownloader,
    MetadataExtractor,
    ContentParser,
    FileIO
)

async def main():
    # Initialize components
    downloader = AsyncDownloader(concurrent_limit=20)
    parser = ContentParser()
    file_io = FileIO()
    
    # Download files
    urls = [
        ("https://example.com/file1.pdf", "downloads/file1.pdf"),
        ("https://example.com/file2.pdf", "downloads/file2.pdf")
    ]
    await downloader.download_batch(urls)
    
    # Parse HTML content
    html = """<html><body>
        <h1>Title</h1>
        <img src="image.jpg" alt="Test">
    </body></html>"""
    
    # Extract metadata
    extractor = MetadataExtractor()
    metadata = extractor.extract_from_html(html, {
        'title': 'h1',
        'images': ('img', 'src')
    })
    
    # Save results
    await file_io.save_json(metadata, 'output/metadata.json')

if __name__ == "__main__":
    asyncio.run(main())

License

MIT License - see LICENSE file for details

Contributing

Contributions are welcome! Please feel free to submit a Pull Request or Issue.

Author

Akram Rakhmetulla (akram042006@gmail.com)

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