In a Q&A, Python programming language creator Guido van Rossum said it was "almost taboo to talk about a Python 4 in a serious sense" following the troubled migration from Python 2.0 to Python 3.0.

Not necessarily for the data-science and machine-learning communities built around Python extensions like NumPy and SciPy, but as a general programming language.

Arduino microcontrollers have added Python to the range of compatible programming languages. Others can be used, and not just Arduino's own IDE app.