How does Web Scraping Work?
Scraping a web page means requesting specific data from a target webpage. When you scrape a page, the code you write sends your request to the server hosting the destination page. The code then downloads the page, only extracting the elements of the page defined initially in the crawling job.
For example, let’s say we are looking to target data in H3 title tags. We would write code for a scraper that looks specifically for that information. The scraper will work in three stages:
Step 1: Send a request to the server to download the site’s content.
Step 2: Filter the page’s HTML to look for the desired H3 tags.
Step 3: Copying the text inside the target tags, producing the output in the format previously specified in the code.
It is possible to carry out web scraping tasks in many programming languages with different libraries, but using Python with the Beautiful Soup library is one of the most popular and effective methods. In the following sections, we will cover the basics for scraping in Python using Beautiful Soup.
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