You can search the official python docs on DDG with !python. So if you search for "!python sum", it takes you right there. They have a lot of other "bangs" that work really well, too: https://duckduckgo.com/bangs
Sure, but given the shit state that Google is, I argue that normal users would rather have to curate their own blacklist a few times instead of being subjected to (at best) SEO spam or (worse) malicious websites.