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<xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3.5/"/>    <changefreq>yearly</changefreq>  </url>    <url>    <loc>https://docs.python.org/3.6/</loc>    <xhtml:linkrel="alternate"hreflang="zh-CN"href="https://docs.python.org/zh-cn/3.6/"/>    <xhtml:linkrel="alternate"hreflang="en"href="https://docs.python.org/en/3.6/"/>    <xhtml:linkrel="alternate"hreflang="fr"href="https://docs.python.org/fr/3.6/"/>    <xhtml:linkrel="alternate"hreflang="es"href="https://docs.python.org/es/3.6/"/>    <xhtml:linkrel="alternate"hreflang="ja"href="https://docs.python.org/ja/3.6/"/>    <xhtml:linkrel="alternate"hreflang="ko"href="https://docs.python.org/ko/3.6/"/>    <xhtml:linkrel="alternate"hreflang="pl"href="https://docs.python.org/pl/3.6/"/>    <xhtml:linkrel="alternate"hreflang="id"href="https://docs.python.org/id/3.6/"/>    <xhtml:linkrel="alternate"hreflang="zh-TW"href="https://docs.python.org/zh-tw/3.6/"/>    <xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3.6/"/>    <changefreq>yearly</changefreq>  </url>    <url>    <loc>https://docs.python.org/3.7/</loc>    <xhtml:linkrel="alternate"hreflang="zh-CN"href="https://docs.python.org/zh-cn/3.7/"/>    <xhtml:linkrel="alternate"hreflang="en"href="https://docs.python.org/en/3.7/"/>    <xhtml:linkrel="alternate"hreflang="fr"href="https://docs.python.org/fr/3.7/"/>    <xhtml:linkrel="alternate"hreflang="es"href="https://docs.python.org/es/3.7/"/>    <xhtml:linkrel="alternate"hreflang="ja"href="https://docs.python.org/ja/3.7/"/>    <xhtml:linkrel="alternate"hreflang="ko"href="https://docs.python.org/ko/3.7/"/>    <xhtml:linkrel="alternate"hreflang="pl"href="https://docs.python.org/pl/3.7/"/>    <xhtml:linkrel="alternate"hreflang="id"href="https://docs.python.org/id/3.7/"/>    <xhtml:linkrel="alternate"hreflang="zh-TW"href="https://docs.python.org/zh-tw/3.7/"/>    <xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3.7/"/>    <changefreq>yearly</changefreq>  </url>    <url>    <loc>https://docs.python.org/3.8/</loc>    <xhtml:linkrel="alternate"hreflang="zh-CN"href="https://docs.python.org/zh-cn/3.8/"/>    <xhtml:linkrel="alternate"hreflang="en"href="https://docs.python.org/en/3.8/"/>    <xhtml:linkrel="alternate"hreflang="fr"href="https://docs.python.org/fr/3.8/"/>    <xhtml:linkrel="alternate"hreflang="es"href="https://docs.python.org/es/3.8/"/>    <xhtml:linkrel="alternate"hreflang="ja"href="https://docs.python.org/ja/3.8/"/>    <xhtml:linkrel="alternate"hreflang="ko"href="https://docs.python.org/ko/3.8/"/>    <xhtml:linkrel="alternate"hreflang="pl"href="https://docs.python.org/pl/3.8/"/>    <xhtml:linkrel="alternate"hreflang="id"href="https://docs.python.org/id/3.8/"/>    <xhtml:linkrel="alternate"hreflang="zh-TW"href="https://docs.python.org/zh-tw/3.8/"/>    <xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3.8/"/>    <changefreq>daily</changefreq>  </url>    <url>    <loc>https://docs.python.org/3.9/</loc>    <xhtml:linkrel="alternate"hreflang="zh-CN"href="https://docs.python.org/zh-cn/3.9/"/>    <xhtml:linkrel="alternate"hreflang="en"href="https://docs.python.org/en/3.9/"/>    <xhtml:linkrel="alternate"hreflang="fr"href="https://docs.python.org/fr/3.9/"/>    <xhtml:linkrel="alternate"hreflang="es"href="https://docs.python.org/es/3.9/"/>    <xhtml:linkrel="alternate"hreflang="ja"href="https://docs.python.org/ja/3.9/"/>    <xhtml:linkrel="alternate"hreflang="ko"href="https://docs.python.org/ko/3.9/"/>    <xhtml:linkrel="alternate"hreflang="pl"href="https://docs.python.org/pl/3.9/"/>    <xhtml:linkrel="alternate"hreflang="id"href="https://docs.python.org/id/3.9/"/>    <xhtml:linkrel="alternate"hreflang="zh-TW"href="https://docs.python.org/zh-tw/3.9/"/>    <xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3.9/"/>    <changefreq>daily</changefreq>  </url>    <url>    <loc>https://docs.python.org/3.10/</loc>    <xhtml:linkrel="alternate"hreflang="zh-CN"href="https://docs.python.org/zh-cn/3.10/"/>    <xhtml:linkrel="alternate"hreflang="en"href="https://docs.python.org/en/3.10/"/>    <xhtml:linkrel="alternate"hreflang="fr"href="https://docs.python.org/fr/3.10/"/>    <xhtml:linkrel="alternate"hreflang="es"href="https://docs.python.org/es/3.10/"/>    <xhtml:linkrel="alternate"hreflang="ja"href="https://docs.python.org/ja/3.10/"/>    <xhtml:linkrel="alternate"hreflang="ko"href="https://docs.python.org/ko/3.10/"/>    <xhtml:linkrel="alternate"hreflang="pl"href="https://docs.python.org/pl/3.10/"/>    <xhtml:linkrel="alternate"hreflang="id"href="https://docs.python.org/id/3.10/"/>    <xhtml:linkrel="alternate"hreflang="zh-TW"href="https://docs.python.org/zh-tw/3.10/"/>    <xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3.10/"/>    <changefreq>daily</changefreq>  </url>    <url>    <loc>https://docs.python.org/3/</loc>    <xhtml:linkrel="alternate"hreflang="zh-CN"href="https://docs.python.org/zh-cn/3/"/>    <xhtml:linkrel="alternate"hreflang="en"href="https://docs.python.org/en/3/"/>    <xhtml:linkrel="alternate"hreflang="fr"href="https://docs.python.org/fr/3/"/>    <xhtml:linkrel="alternate"hreflang="es"href="https://docs.python.org/es/3/"/>    <xhtml:linkrel="alternate"hreflang="ja"href="https://docs.python.org/ja/3/"/>    <xhtml:linkrel="alternate"hreflang="ko"href="https://docs.python.org/ko/3/"/>    <xhtml:linkrel="alternate"hreflang="pl"href="https://docs.python.org/pl/3/"/>    <xhtml:linkrel="alternate"hreflang="id"href="https://docs.python.org/id/3/"/>    <xhtml:linkrel="alternate"hreflang="zh-TW"href="https://docs.python.org/zh-tw/3/"/>    <xhtml:linkrel="alternate"hreflang="pt-BR"href="https://docs.python.org/pt-br/3/"/>    <changefreq>daily</changefreq>  </url></urlset>

It also add a robots.txt:

Sitemap: https://docs.python.org/sitemap.xml# Prevent development and old documentation from showing up in search results.User-agent: *Disallow: /devDisallow: /release# Disallow EOL versionsDisallow: /2/Disallow: /2.0/Disallow: /2.1/Disallow: /2.2/Disallow: /2.3/Disallow: /2.4/Disallow: /2.5/Disallow: /2.6/Disallow: /2.7/Disallow: /3.0/Disallow: /3.1/Disallow: /3.2/Disallow: /3.3/Disallow: /3.4/

to advertise the sitemap, and disallow old versions (EOL version that do not have a canonical to /3/).

Closes#94,#56