parsera
Lightweight library for scraping web-sites with LLMs
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Parsera is a lightweight Python library designed for scraping websites using LLMs. It offers simplicity and efficiency by minimizing token usage, enhancing speed, and reducing costs. Users can easily set up and run the tool to extract specific elements from web pages, generating JSON output with relevant data. Additionally, Parsera supports integration with various chat models, such as Azure, expanding its functionality and customization options for web scraping tasks.
README:
Lightweight Python library for scraping websites with LLMs. You can test it on Parsera website.
Because it's simple and lightweight. With interface as simple as:
scraper = Parsera()
result = scraper.run(url=url, elements=elements)- Installation
- Documentation
- Basic usage
- Running with Jupyter Notebook
- Running with CLI
- Running in Docker
pip install parsera
playwright installCheck out documentation to learn more about other features, like running custom models and playwright scripts.
First, set up PARSERA_API_KEY env variable (If you want to run custom LLM see Custom Models).
You can do this from python with:
import os
os.environ["PARSERA_API_KEY"] = "YOUR_PARSERA_API_KEY_HERE"Next, you can run a basic version:
from parsera import Parsera
url = "https://news.ycombinator.com/"
elements = {
"Title": "News title",
"Points": "Number of points",
"Comments": "Number of comments",
}
scraper = Parsera()
result = scraper.run(url=url, elements=elements)result variable will contain a json with a list of records:
[
{
"Title":"Hacking the largest airline and hotel rewards platform (2023)",
"Points":"104",
"Comments":"24"
},
...
]There is also arun async method available:
result = await scrapper.arun(url=url, elements=elements)Either place this code at the beginning of your notebook:
import nest_asyncio
nest_asyncio.apply()Or instead of calling run method use async arun.
Before you run Parsera as command line tool don't forget to put your OPENAI_API_KEY to env variables or .env file
You can configure elements to parse using JSON string or FILE.
Optionally, you can provide FILE to write output and amount of SCROLLS, that you want to do on the page
python -m parsera.main URL {--scheme '{"title":"h1"}' | --file FILENAME} [--scrolls SCROLLS] [--output FILENAME]In case of issues with your local environment you can run Parsera with Docker, see documentation.
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