Python versions
As many readers are already aware, Python has been going through a transition from Python 2 to Python 3 for the last few years. Python 3 was released back in 2008, over 10 years ago, with active development with the most recent release of 3.7. Unfortunately, Python 3 is not backward compatible with Python 2. At the time of writing the second edition of this book, in the middle of 2018, the Python community has largely moved over to Python 3. The latest Python 2.x release, 2.7, was released over six years ago in mid-2010. Fortunately, both versions can coexist on the same machine. Personally, I use Python 2 as my default interpreter when I type in Python at the Command Prompt, and I use Python 3 when I need to use Python 3. ...
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