Python adopts a 12-month release cycle
This is great if you code in pure Python! The problem is that every new Python version seems to break something. Python 3.8 was released almost two weeks ago, and some popular libraries still don't work with it, e. g. <i>SciPy</i>, <i>Matplotlib</i>, <i>OpenCV</i>, <i>PyQt</i>, <i>PySide2</i> and probably a bunch of other libraries that depend on the above.