Well, this quote is a little pessimistic because now almost everything is either Python 3 compatible or has been replaced with something that is and it's only b

Well, this quote is a little pessimistic because now almost everything is either Python 3 compatible or has been replaced with something that is and it's only been 7 years. :P Even NumPy and SciPy work on Python 3 now, and it's not like there are massive differences between Py2 and Py3 anyway, so generally speaking it shouldn't be hard for a noob to revert to Py2 if it becomes inexplicably necessary. It's time. All new code should be in Python 3.