parsera
Lightweight library for scraping web-sites with LLMs
Stars: 749
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 minimal token use which boosts speed and reduces expenses.
- Installation
- Documentation
- Basic usage
- Running with Jupyter Notebook
- Running with CLI
- Running in Docker
pip install parsera
playwright install
Check out documentation to learn more about other features, like running custom models and playwright scripts.
If you want to use OpenAI, remember to set up OPENAI_API_KEY
env variable.
You can do this from python with:
import os
os.environ["OPENAI_API_KEY"] = "YOUR_OPENAI_API_KEY_HERE"
Next, you can run a basic version that uses gpt-4o-mini
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.
python -m parsera.main URL {--scheme '{"title":"h1"}' | --file FILENAME} [--output FILENAME]
In case of issues with your local environment you can run Parsera with Docker, see documentation.
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