The GP is probably referring to the attrs library, which is another (older) way of creating dataclasses than the stdlib way. It has an easy way to create slott

The GP is probably referring to the attrs library, which is another (older) way of creating dataclasses than the stdlib way. It has an easy way to create slotted dataclasses. http://www.attrs.org/en/stable/examples.html#slots http://www.attrs.org/en/stable/examples.html#slots