error[E0277]: the trait bound `TestClass: Clone` is not satisfied --> $DIR/missing_clone.rs:15:32 | 15 | let t: TestClass = pyvalue.extract(py).unwrap(); | ^^^^^^^ the trait `Clone` is not implemented for `TestClass` | = note: required because of the requirements on the impl of `pyo3::FromPyObject<'_>` for `TestClass`