def hits(app, sandbox):
    """List hits for an experiment id."""
    hit_list = list(_current_hits(_mturk_service_from_config(sandbox), app))
    out = Output()
    out.log(
        "Found {} hits for this experiment id: {}".format(
            len(hit_list), ", ".join(h["id"] for h in hit_list)
        )
    )