Function future_discard_from_awaited_by

crates/stdlib/src/_asyncio.rs:2589–2603

(
        fut: PyObjectRef,
        waiter: PyObjectRef,
        vm: &VirtualMachine,
    )

    #[pyfunction]
    fn future_discard_from_awaited_by(
        fut: PyObjectRef,
        waiter: PyObjectRef,
        vm: &VirtualMachine,
    ) -> PyResult<()> {
        // Only operate on native Future/Task objects (including subclasses).
        // Non-native objects are silently ignored.
        if let Some(task) = fut.downcast_ref::<PyTask>() {
            return task.base.awaited_by_discard(&waiter, vm);
        }
        if let Some(future) = fut.downcast_ref::<PyFuture>() {
            return future.awaited_by_discard(&waiter, vm);
        }
        Ok(())
    }

    // TaskStepMethWrapper - wrapper for task step callback with proper repr