Twitter digest 2017 week 21

The text is a collection of tweets and retweets from various Python enthusiasts and developers highlighting notable updates, resources, and tips related to Python programming. Key mentions include the early access release of "Cracking Codes with Python" by Al Sweigart, a blog post explaining PEP 518, and several Python tools and projects such as Gitsuggest and top machine learning open-source projects. It also references recent releases and tips, such as Pytest 3.1.0, navigating edits in PyCharm, and understanding shallow and deep copy in Python. Additionally, there is mention of a new book on Tkinter, a post about responsive bar charts using Bokeh and Flask, and blog posts inspired by talks from PyCon 2017.