To demonstrate using a Sitemap to investigate content, we will use the Gap website.
Gap has a well structured website with a Sitemap to help web crawlers locate their updated content. If we use the techniques from Chapter 1, Introduction to Web Scraping, to investigate a website, we would find their robots.txt file at http://www.gap.com/robots.txt, which contains a link to this Sitemap:
Sitemap: http://www.gap.com/products/sitemap_index.xml
Here are the contents of the linked Sitemap file:
<?xml version="1.0" encoding="UTF-8"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<sitemap>
<loc>http://www.gap.com/products/sitemap_1.xml</loc>
<lastmod>2017-03-24</lastmod>
</sitemap>
<sitemap>
<loc>http://www.gap.com/products/sitemap_2.xml</loc>
<lastmod...