PyQuery-based scraping micro-framework.

Last update: Jul 20, 2022

Related tags

Web Crawling demiurge

Overview

demiurge

PyQuery-based scraping micro-framework. Supports Python 2.x and 3.x.

Documentation: http://demiurge.readthedocs.org

Installing demiurge

$ pip install demiurge

Quick start

Define items to be scraped using a declarative (Django-inspired) syntax:

import demiurge

class TorrentDetails(demiurge.Item):
    label = demiurge.TextField(selector='strong')
    value = demiurge.TextField()

    def clean_value(self, value):
        unlabel = value[value.find(':') + 1:]
        return unlabel.strip()

    class Meta:
        selector = 'div#specifications p'

class Torrent(demiurge.Item):
    url = demiurge.AttributeValueField(
        selector='td:eq(2) a:eq(1)', attr='href')
    name = demiurge.TextField(selector='td:eq(2) a:eq(2)')
    size = demiurge.TextField(selector='td:eq(3)')
    details = demiurge.RelatedItem(
        TorrentDetails, selector='td:eq(2) a:eq(2)', attr='href')

    class Meta:
        selector = 'table.maintable:gt(0) tr:gt(0)'
        base_url = 'http://www.mininova.org'


>>> t = Torrent.one('/search/ubuntu/seeds')
>>> t.name
'Ubuntu 7.10 Desktop Live CD'
>>> t.size
u'695.81\xa0MB'
>>> t.url
'/get/1053846'
>>> t.html
u'<td>19\xa0Dec\xa007</td><td><a href="/cat/7">Software</a></td><td>...'

>>> results = Torrent.all('/search/ubuntu/seeds')
>>> len(results)
116
>>> for t in results[:3]:
...     print t.name, t.size
...
Ubuntu 7.10 Desktop Live CD 695.81 MB
Super Ubuntu 2008.09 - VMware image 871.95 MB
Portable Ubuntu 9.10 for Windows 559.78 MB
...

>>> t = Torrent.one('/search/ubuntu/seeds')
>>> for detail in t.details:
...     print detail.label, detail.value
... 
Category: Software > GNU/Linux
Total size: 695.81 megabyte
Added: 2467 days ago by Distribution
Share ratio: 17 seeds, 2 leechers
Last updated: 35 minutes ago
Downloads: 29,085

See documentation for details: http://demiurge.readthedocs.org

Why demiurge?

Plato, as the speaker Timaeus, refers to the Demiurge frequently in the Socratic dialogue Timaeus, c. 360 BC. The main character refers to the Demiurge as the entity who "fashioned and shaped" the material world. Timaeus describes the Demiurge as unreservedly benevolent, and hence desirous of a world as good as possible. The world remains imperfect, however, because the Demiurge created the world out of a chaotic, indeterminate non-being.

http://en.wikipedia.org/wiki/Demiurge

Contributors

Martín Gaitán (@mgaitan)

Comments

Reausable cleaning functions
You can now add a "clean" kwarg containing a function to a field.

This makes it easy to use quick filtering (I want this data to be an int) and to re-use functions such as parsedatetime.

score = demiurge.TextField(selector=".score .upvoted", clean=int)
opened by traverseda 5
proof of concept: subitem field

short rationale: Sometimes I need to scrap a page to retrieve the actual links where the items are. I would like a way to nest Item classes, analog (in some way) to a in ForeignKey / ManyToManyField in Django.

This is a first PR as a proof of concept, to discuss the idea and its API.

opened by mgaitan 5
RelatedItems only work across urls

An obvious use of RelatedItems (or a similar construct) is recursively mapping a comment tree. Right now there's no elegant way to do that.

An example

http://pastebin.com/WDL4RjkE

Reading through the actual code, I think I might be wrong about this. I'll try and make the docs clearer.

opened by traverseda 2
Use lib "requests" for downloading

I'm right now making use of https://pypi.python.org/pypi/requests-cache which creates a cache of the downloaded stuff magically, and it's awesome. So, I would like to be able to take advantage of it using demiurge.

I don't know if just as an option or as a replacement of pyquery downloader.

What do you think?

opened by jmansilla 2
docs: fix simple typo, ocurrence -> occurrence

There is a small typo in docs/index.rst.

Should read occurrence rather than ocurrence.

Semi-automated pull request generated by https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md

opened by timgates42 1
Fix when no selector defined
the default selector is the whole page ('html') but this is applied through PyQuery.find wich traverses down. example:

In [2]: PyQuery('<html>hello</html>').find('html') Out[2]: [] In [3]: PyQuery('<html>hello</html>')('html') Out[3]: [<html>]
opened by mgaitan 1
support self reference in RelatedItem

RelatedItem('self'). Also, the relateditem's item class could be given by its name (i.eRelatedItem("ItemClass")` ) A typical use case is a listing page with a "next page" link.

opened by mgaitan 0

Releases(v0.2)

v0.2(Sep 20, 2014)
Added docs.

Added RelatedItem.

Added field clean support.

Source code(tar.gz)
Source code(zip)

Owner

Matias Bordese

GitHub Repository http://demiurge.readthedocs.org

A Web Scraper built with beautiful soup, that fetches udemy course information. Get udemy course information and convert it to json, csv or xml file

Udemy Scraper A Web Scraper built with beautiful soup, that fetches udemy course information. Installation Virtual Environment Firstly, it is recommen

15 May 17, 2022

一款利用Python来自动获取QQ音乐上某个歌手所有歌曲歌词的爬虫软件

QQ音乐歌词爬虫一款利用Python来自动获取QQ音乐上某个歌手所有歌曲歌词的爬虫软件，默认去除了所有演唱会（Live）版本的歌曲。使用方法直接运行python run.py即可，然后输入你想获取的歌手名字，然后静静等待片刻。 output目录下保存生成的歌词和歌名文件。以周杰伦为例，会生成两

11 Jul 27, 2022

Scraping web pages to get data

Scraping Data Get public data and save in database This is project use Python How to run a project 1 - Clone the repository 2 - Install beautifulsoup4

2 Nov 01, 2021

A Python package that scrapes Google News article data while remaining undetected by Google.

A Python package that scrapes Google News article data while remaining undetected by Google. Our scraper can scrape page data up until the last page and never trigger a CAPTCHA (download stats: https

6 Aug 10, 2022

Instagram_scrapper - This project allow you to scrape the list of followers, following or both from a public Instagram account, and create a csv or excel file easily.

Instagram_scrapper This project allow you to scrape the list of followers, following or both from a public Instagram account, and create a csv or exce

5 Oct 17, 2022

A Powerful Spider(Web Crawler) System in Python.

pyspider A Powerful Spider(Web Crawler) System in Python. Write script in Python Powerful WebUI with script editor, task monitor, project manager and

15.7k Jan 04, 2023

Pythonic Crawling / Scraping Framework based on Non Blocking I/O operations.

Pythonic Crawling / Scraping Framework Built on Eventlet Features High Speed WebCrawler built on Eventlet. Supports relational databases engines like

173 Dec 05, 2022

Python scraper to check for earlier appointments in Clalit Health Services

clalit-appt-checker Python scraper to check for earlier appointments in Clalit Health Services Some background If you ever needed to schedule a doctor

16 Sep 17, 2022

Pro Football Reference Game Data Webscraper

Pro Football Reference Game Data Webscraper Code Copyright Yeetzsche This is a simple Pro Football Reference Webscraper that can either collect all ga

6 Dec 21, 2022

Tool to scan for secret files on HTTP servers

snallygaster Finds file leaks and other security problems on HTTP servers. what? snallygaster is a tool that looks for files accessible on web servers

2k Dec 28, 2022

Binance harvester - A Python 3 script to harvest data from the Binance socket stream and calculate popular TA indicators and produce lists of top trending coins

68 Oct 08, 2022

A dead simple crawler to get books information from Douban.

Introduction A dead simple crawler to get books information from Douban. Pre-requesites Python 3 Install dependencies from requirements.txt (Optional)

1 Jan 10, 2022

A tool to easily scrape youtube data using the Google API

YouTube data scraper To easily scrape any data from the youtube homepage, a youtube channel/user, search results, playlists, and a single video itself

7 Dec 03, 2022

Amazon web scraping using Scrapy Framework

Amazon-web-scraping-using-Scrapy-Framework Scrapy Scrapy is an application framework for crawling web sites and extracting structured data which can b

1 Jan 25, 2022

Web Crawlers for Data Labelling of Malicious Domain Detection & IP Reputation Evaluation

Web Crawlers for Data Labelling of Malicious Domain Detection & IP Reputation Evaluation This repository provides two web crawlers to label domain nam

1 Nov 05, 2021

Get paper names from dblp.org

scraper-dblp Get paper names from dblp.org and store them in a .txt file Useful for a related literature :) Install libraries pip3 install -r requirem

1 Dec 07, 2021

Video Games Web Scraper is a project that crawls websites and APIs and extracts video game related data from their pages.

Video Games Web Scraper Video Games Web Scraper is a project that crawls websites and APIs and extracts video game related data from their pages. This

1 Jan 12, 2022