I doubt that this is the selling point. Imho it is nothing special compared to Haskell, F# and the likes.
Python doesn't require you to understand monads to write useful Python.
To be clear: Haskell is great, but its entire vibe (lazy evaluation, pure functions) is entirely different from what Python's about. Someone who knows C++ or Java has a much bigger gap to jump to pick up Haskell than to pick up Python.
It's a huge selling point for me and many I know who knows it. Nothing like code that you can read like you're reading a book/article.