def METHOD_NAME(self, out, session):
    out.writerow([
        'Group Name', '# of Sessions', 'Session Length (Minutes)',
    ])
    autograph_sessions = session.query(GuestAutograph).filter(GuestAutograph.num > 0)
    for request in autograph_sessions:
        out.writerow([request.guest.group.name, request.num, request.length]