ASK HN : What are useful Python resources for a non-beginner?

I would suggest following the work and talks of Raymond Hettinger @raymondh Such as: Raymond Hettinger - Beyond PEP 8 -- Best practices for beautiful intelligible code - PyCon 2015 https://www.youtube.com/watch?v=wf-BqAjZb8M

Intermediate Python : http://book.pythontips.com/en/latest/index.html

It will tell you about those nice things and tricks, conventions that you should know/follow during some non-beginner project.

Check out Real Python: https://realpython.com.

The second half of the second course and the third course cover intermediate to advanced material.

(Note: I am the co-counder/author).