can't add variables to instances of built-in classes

[Lawrence D’Oliveiro]

On Thursday, July 21, 2016 at 2:29:53 PM UTC+12, Chris Angelico wrote:

> Using __slots__ basically takes your object down to the level of a
> Java one.

Is Java like a bogeyman you use to scare people with if they don’t write Python code the way you like it?