Python history starts somewhere in the late 1980s, but its 1.0 release date was in the year 1994, so it is not a very young language. There could be a whole timeline of major Python releases mentioned here, but what really matters is a single date: December 3, 2008 – the release date of Python 3.0.
At the time of writing, seven years have passed since the first Python 3 release. It is also four years since the creation of PEP 404—the official document that "un-released" Python 2.8 and officially closed the 2.x branch. Although a lot of time has passed, there is a specific dichotomy in the Python community—while the language develops very fast, there is a large group of its users that do not want to move forward with it.