Using the Python "celery" library we'll write a very basic webscraper to fetch the top 1000 websites
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What is Web scraping ?
Web scraping, web harvesting, or web data extraction is data scraping used for extracting data from websites. Web scraping software may access the World Wide Web directly using the Hypertext Transfer Protocol, or through a web browser. While web scraping can be done manually by a software user, the term typically refers to automated processes implemented using a bot or web crawler. It is a form of copying, in which specific data is gathered and copied from the web, typically into a central local database or spreadsheet, for later retrieval or analysis.
Web Scraping Playlist:
Other Web Scraping videos:
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CURL:
Web Scraping : URL Requests with cURL and Chrome Console
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Celery:
Web Scraping : Scraping w/ Celery
Scrapy:
Web Scraping : Introduction to Web Scraping using Scrapy
Web Crawler:
Web Scraping : Python Web Crawler
Pandas:
Web Scraping : Python Pandas: storing data into a Pandas data-frame
Web Scraping : Easily extract tables from websites with pandas and python
Web Scraping : Extract tabular data from PDF with Python - Tabula, Camelot, PyPDF2
XPATH:
Web Scraping : Python + XPath = Extra Parsing Power
Re Module:
Web Scraping : using python re module to process text files part1
Web Scraping : using python re module to process text files part2
API:
Web Scraping : Moving Average Calculation using Python
Web scraping a web page involves fetching it and extracting from it.Fetching is the downloading of a page (which a browser does when you view the page). Therefore, web crawling is a main component of web scraping, to fetch pages for later processing. Once fetched, then extraction can take place. The content of a page may be parsed, searched, reformatted, its data copied into a spreadsheet, and so on. Web scrapers typically take something out of a page, to make use of it for another purpose somewhere else. An example would be to find and copy names and phone numbers, or companies and their URLs, to a list (contact scraping).