Really? I program Python for over a decade now and compared to other language it was always the one where style somewhat was the smallest issue with that language (compared to the C, C++, C#, Javascript, Java I have seen).
Might be that the whitespace indentations focus the mind. Also: PEPs already act as style guides. And if you are worried to do it wrong, just run it through a code formatter like black. It really isn't that much of a problem IMO.
I think grandparent is talking about something else. Large C++ codebases often have a guide that says which parts of the language to use and not to use. That can be useful if you have a team with people with different levels of expertise in the language, or expertise in different parts of the language. C++ has grown to be a language with a lot of different parts to choose from.
And it looks like Python is heading in the same direction. It's not difficult to imagine a future where some Python projects are going to want such guides too.
Might be that the whitespace indentations focus the mind. Also: PEPs already act as style guides. And if you are worried to do it wrong, just run it through a code formatter like black. It really isn't that much of a problem IMO.