How to Build a Scalable Web Crawler Using Python's Scrapy Framework

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Scrapy is an open-source Python framework designed for building high-performance web crawlers that can extract data from websites at scale. A developer tutorial published on DEV Community walks through setting up a Scrapy project, from installing the framework via pip or Anaconda to generating a structured project directory. The guide demonstrates how to write a Spider class that defines target URLs, parses page content using CSS selectors, and handles pagination automatically. The tutorial uses the public demo site quotes.toscrape.com as a safe, beginner-friendly practice target. The walkthrough is aimed at data scientists, developers, and automation enthusiasts looking to move beyond manual data collection or basic scripting approaches.

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