human
I wrote the below code

    import verisure
    global HUB
    HUB = VerisureHub(config[DOMAIN], verisure)
    if (not HUB.login()):
        return False
    hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, (lambda event: HUB.logout()))
    HUB.update_overview()
    for component in ('sensor', 'switch', 'alarm_control_panel', 'lock', 'camera', 'binary_sensor'):
        discovery.load_platform(hass, component, DOMAIN, {}, config)
    descriptions = conf_util.load_yaml_config_file(os.path.join(os.path.dirname(__file__), 'services.yaml'))
    def capture_smartcam(service):
        'Capture    a    new    picture    from    a    smartcam.'
        device_id = service.data.get(ATTR_DEVICE_SERIAL)
        HUB.smartcam_capture(device_id)
        _LOGGER.debug('Capturing    new    image    from    %s', ATTR_DEVICE_SERIAL)
    hass.services.register(DOMAIN, SERVICE_CAPTURE_SMARTCAM, capture_smartcam, descriptions[DOMAIN][SERVICE_CAPTURE_SMARTCAM], schema=CAPTURE_IMAGE_SCHEMA)
    return True

What's a good function header?
 Here's a good function header?
assistant
#Here's a good function header.

def setup(hass, config):