A HT/XML web scraping tool
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Libextract is a statistics-enabled data extraction library that works on HTML and XML documents and written in Python. Originating from eatiht, the extraction algorithm works by making one simple assumption: data appear as collections of repetitive elements. You can read about the reasoning here.
- libextract.api.extract(document, encoding=’utf-8’, count=5)
- Given an html document, and optionally the encoding, return a list of nodes likely containing data (5 by default).
pip install libextract
Due to our simple definition of “data”, we open up a single interfaceable method. Post-processing is up to you.
from requests import get from libextract.api import extract r = get('http://en.wikipedia.org/wiki/Information_extraction') textnodes = list(extract(r.content))
Using lxml’s built-in methods for post-processing:
>> print(textnodes.text_content()) Information extraction (IE) is the task of automatically extracting structured information...
The extraction algo is agnostic to article text as it is with tabular data:
height_data = get("http://en.wikipedia.org/wiki/Human_height") tabs = list(extract(height_data.content))
>> [elem.text_content() for elem in tabs.iter('th')] ['Country/Region', 'Average male height', 'Average female height', ...]
This project is still in its infancy; and advice and suggestions as to what this library could and should be would be greatly appreciated
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