Documentation

https://docs.python.org/3/reference/datamodel.html#notes-on-using-slots

One of the bulletpoints:

• Nonempty slots does not work for classes derived from “variable-length” built-in types such as int, bytes and tuple.

Points to clarify:

• What does "does not work" mean?
• Whats the set of "variable-length" built-in types? Is str one of them?

Linked PRs

• gh-100315: clarification to __slots__ docs. #102621
• [3.11] gh-100315: clarification to __slots__ docs. (GH-102621) #102687
• [3.10] gh-100315: clarification to __slots__ docs. (GH-102621) #102688