It's Past Time to Switch to Python 3

For a long time, it made sense to stick with Python 2 over Python 3 because important libraries worked best for Python 2. Then even after libraries worked correctly in Python 3, a user who had a large collection of libraries installed might not want to start all over with Python 3. Anaconda has changed all that with a Python distribution that includes all of the fundamental data science libraries, a package manager that assists in keeping packages up to date, and other goodies. So all the examples here will be Python 3 from now on.