It's relatively recent. IMHO Python 3.5 to 3.7 feel like the language is going in a different direction than it did before -- type hints and the handling of asynchrony in particular.
Yeah, I've just moved from a Python thing to doing some modern JS (async/await etc.), and they feel like cousins. To my surprise, I find that I like the comparative minimalism of JS: it has most of the key features of Python, but doesn't feel like it has the same cognitive load.