When I create my own web crawler, why is the page blank with no links when I follow the advice in an old MakeUseOf article?

Lisa Swanstrom March 6, 2012
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I’ve been reading James Bruce’s article on building a basic web crawler (Part 1 How To Build A Basic Web Crawler To Pull Information From A Website (Part 1) How To Build A Basic Web Crawler To Pull Information From A Website (Part 1) Read More and Part 2 How To Build A Basic Web Crawler To Pull Information From A Website (Part 2) How To Build A Basic Web Crawler To Pull Information From A Website (Part 2) Read More ). It’s super clear, but the second example isn’t working for me. It’s supposed to print a bunch of links, but I just get a blank page. Any ideas what I might be doing wrong?
Thanks!

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