Python history starts somewhere in the late 1980s, but its 1.0 release date was in the year 1994. So, it isn't a young language. There could be a whole timeline of major Python releases mentioned here, but what really matters is a single date: Python 3.0—December 3, 2008.
At the time of writing, almost ten years have passed since the first Python 3 release. It is also seven 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 is developing very fast, there is a large group of its users that do not want to move forward with it.