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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def turn_on_nightlight(self):
 """Turn on nightlight"""

        body = helpers.req_body(self.manager, 'devicestatus')
        body['uuid'] = self.uuid
        body['mode'] = 'auto'

        response, _ = helpers.call_api(
            '/15a/v1/device/nightlightstatus',
            'put',
            headers=helpers.req_headers(self.manager),
            json=body
        )

        return helpers.check_response(response, '15a_ntlight')