Class ParamSpec

crates/vm/src/stdlib/typevar.rs:457–465

    #[derive(Debug, PyPayload)]
    #[allow(dead_code)]
    pub struct ParamSpec {
        name: PyObjectRef,
        bound: Option<PyObjectRef>,
        default_value: PyMutex<PyObjectRef>,
        evaluate_default: PyMutex<PyObjectRef>,
        covariant: bool,
        contravariant: bool,
        infer_variance: bool,
    }

    #[pyclass(
        flags(HAS_DICT, HAS_WEAKREF),