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Developing a Responsible and Ethical Web Scraper in Go: A Comprehensive Exercise Guide

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Sure, here is a more detailed description for exercise 7:

Exercise: Develop a Web Scraper in Go

Your task is to develop a web scraper in the Go language, using the "net/http" and "goquery" packages. The purpose of this web scraping tool is to gather information from a webpage and print useful data to the console.

Requirements:

  1. Select a target webpage to scrape data from. Preferably, select a page with structured data like an article page from Wikipedia or live cricket match scores from ESPN. Make sure to comply with the website's policies on web scraping.

  2. Write Go code to send HTTP requests to the webpage and fetch the HTML content. You can use the http.Get() function from the "net/http" package.

  3. Parse the fetched HTML content to find the specific data you're looking for. Create a "goquery" document from the HTML, then use goquery's convenient jQuery-like syntax to find and extract data.

  4. Make sure to handle any errors that might occur during the HTTP request and HTML parsing phases. If an error occurs, your program should print a clear, understandable error message to the console.

  5. Finally, print the extracted data to the console in a neat, readable format. If the data could be structured in a key-value format or JSON, that's even better!

Optional Challenges:

  1. Add functionality to the script to scrape data from multiple pages of the website.

  2. Save the scraped data to a text file or a database instead of simply printing it to the console.

  3. Implement features that respect the target website's "robots.txt" rules and implementing-rate-limiting-in-nodejs-applications-using-middleware-libraries-667db3a5e41168056571ca37.

Remember, web scraping should be done ethically and responsibly, respecting the target website's rules and user's privacy. Always ensure that you have permission to scrape and that you are not breaking any laws in your jurisdiction.