Why the recommendation for Learn Python 3 The Hard Way? Not only the author was against Python 3 for the longest time (but his Python 2 stuff would be outdated, so less money, right?), his persona was controversial at best here in HN. Don't support Zed Shaw or Terry Goodkind[1], folks.
Instead I suggest Real Python[2], which is extensive but to the point, or Automate the Boring Stuff[3], that also has practical examples and free.
[1] https://www.theguardian.com/books/2018/feb/26/terry-goodkind...