The PyCon 2017 videos are already available on Youtube. Here are some highlights:
The Vanderplas Keynote
Raymond Hettinger’s “Modern Python Dictionaries — A confluence of a dozen great ideas”
Brett Cannon’s “What’s New in Python 3.6?”
And there’s much more here: https://www.youtube.com/channel/UCrJhliKNQ8g0qoE_zvL8eVg/feed