ScraperLib
_____ _ _ _ / ____| | | (_) | | (___ ___ _ __ __ _ _ __ ___ _ __ | | _| |__ \___ \ / __| '__/ _` | '_ \ / _ \ '__|| | | | '_ \ ____) | (__| | | (_| | |_) | __/ | | |____| | |_) | |_____/ \___|_| \__,_| .__/ \___|_| |______|_|_.__/ | | |_| ============================================================== Starting download of ScraperLib ==============================================================
✨ Features
- Parallel Downloads: Uses Ray to download multiple files simultaneously, maximizing bandwidth and efficiency.
- 403 Avoidance: Rotates user-agents, sets referer headers, and uses session management to avoid being blocked.
- Incremental Mode: Optionally skip files already downloaded.
- Robust State Management: Tracks completed, failed, and skipped downloads with atomic file operations.
- Progress Visualization: Uses tqdm for beautiful progress bars.
- Comprehensive Reporting: Generates JSON reports and visualizations (if matplotlib is installed) of download delays and errors.
- Colorful Console Output: Uses colorama for clear, color-coded logs.
- Dual Logging: Terminal shows only relevant events (e.g.,
[DONE]for successful downloads), while the log file contains all attempts, retries, and errors for full traceability. - Highly Configurable CLI: All parameters (parallelism, chunk size, retry/backoff, output dirs, etc.) can be set via command line.
📦 Installation
Requires Python 3.12+.
-
Clone the repository:
git clone https://github.com/rmonteiro-pereira/Scraper-Lib.git cd Scraper-Lib
-
Install dependencies — the project uses uv and ships a committed
uv.lock, so this reproduces the exact resolved set:uv syncOr with pip, installing the package itself in editable mode:
pip install -e .
Main dependencies:
rayrequeststqdmcoloramabeautifulsoup4matplotlibnumpyportalocker
🚀 Usage
CLI
python -m scraper_lib.cli --url <URL> --patterns .csv .zip --dir data --max-files 10
Main CLI options:
--url: Base URL to scrape for files.--patterns: List of file patterns to match (e.g. .csv .zip).--dir: Download directory.--incremental: Enable incremental download state.--max-files: Limit number of files to download.--max-concurrent: Max parallel downloads.--chunk-size: Chunk size for downloads (e.g. 1gb, 10mb, 8 bytes).--initial-delay: Initial delay between retries (seconds).--max-delay: Maximum delay between retries (seconds).--max-retries: Maximum number of download retries.--state-file: Path for download state file.--log-file: Path for main log file.--report-prefix: Prefix for report files.--headers: Path to JSON file with custom headers.--user-agents: Path to text file with custom user agents (one per line).--disable-logging: Disable all logging for production pipelines.--disable-terminal-logging: Disable terminal logging.--dataset-name: Dataset name for banner.--disable-progress-bar: Disable tqdm progress bar.--output-dir: Directory for report PNGs and JSON.--max-old-logs: Max old log files to keep (default: 25, None disables rotation).--max-old-runs: Max old report/png runs to keep (default: 25, None disables rotation).
See all options with:
python -m scraper_lib --help
Programmatic Usage
from ScraperLib import ScraperLib
scraper = ScraperLib(
base_url: str = "https://example.com/data",
file_patterns: List[str] = [".csv", ".parquet", ".zip"],
download_dir: str = "data",
incremental: bool = True,
max_files: Optional[int] = 2,
max_concurrent: Optional[int] = 16,
chunk_size: Union[str, int] = "10mb",
initial_delay: float = 1.0,
max_delay: float = 60.0,
max_retries: int = 5,
dataset_name: Optional[str] = "MY DATASET"
)
scraper.run()
🛡️ Anti-Blocking Protocols
- User-Agent Rotation: Randomizes user-agent strings on each request and after 403 errors.
- Referer Header: Sets a realistic referer to mimic browser behavior.
- Session Management: Uses a new HTTP session for each attempt.
- Exponential Backoff: Waits longer between retries to avoid rate-limiting.
📊 Reporting
After execution, a summary is printed to the console and a detailed report is saved as a JSON file. If matplotlib is installed, visualizations of download delays are also generated.
🧪 Testing
To run all tests:
pytest tests
📝 Project Structure
.
├── src/
│ ├── __init__.py # Makes src a package
│ ├── scraper_lib.py # Main library
│ ├── DownloadState.py # Download state management
│ ├── CustomLogger.py # Custom logger
├── example.py # Example usage (runnable from root)
├── pyproject.toml # Project metadata and dependencies
├── uv.lock # Locked, reproducible dependency set
├── output/
│ ├── pngs/ # Download delay analysis PNGs
│ └── reports/ # Download reports (JSON)
├── data/ # Downloaded files
├── logs/ # Log files
├── state/ # Download state (auto-generated)
├── tests/ # Unit tests
🤝 Contributing
Pull requests and suggestions are welcome! Please open an issue or submit a PR.
📄 License
This project is licensed under the MIT License.
📬 Contact
Questions or suggestions? Open an issue or contact rmonteiropereira1@gmail.com.
Happy data hunting with ScraperLib! 🚀
1 maintainer
Metadata
1 maintainer
Release files for Scraper-Lib-RMP 0.2.306
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| scraper_lib_rmp-0.2.306-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 46.7 kB
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| Uploaded via |
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