Pure Python was a huge selling point back when using a compiled library involved downloading and running random .exe files from someone's personal page on a university website. It is much less of a selling point now that we have binary wheels and uv/Poetry/etc. that create cross-platform lock files.
I feel nostalgic seeing (a mirror of) that download page again, but that era was such a pain.
Mirror: http://qiniucdn.star-lai.cn/portal/2016/09/05/tu3p2vd4znn