def set_state(self, selector='all',
        power=None, color=None, brightness=None, duration=None):
        """Given a selector (defaults to all), set the state of a light.
        Selector can be based on id, scene_id, group_id, label, etc.
        Returns list of lightbulb statuses if successful.
        See http://api.developer.lifx.com/v1/docs/selectors

        selector: required String
            The selector to limit which lights will run the effect.

        power: String
            e.g "on" or "off"

        color: String
            e.g #ff0000 or "red"
            Color to set selected bulbs.
            Hex color code, color name, saturation percentage, hue, RGB, etc.
            See http://api.developer.lifx.com/v1/docs/colors

        brightness: Double
            e.g 0.5
            Set brightness level from 0 to 1

        duration: Double
            e.g 10
            Setting transition time, in seconds, from 0.0 to
            3155760000.0 (100 years).
        """

        argument_tuples = [
            ('power', power),
            ('color', color),
            ('brightness', brightness),
            ('duration', duration)
        ]

        return self.client.perform_request(
            method='put', endpoint='lights/{}/state',
            endpoint_args=[selector], argument_tuples=argument_tuples)
Given a selector (defaults to all), set the state of a light.
        Selector can be based on id, scene_id, group_id, label, etc.
        Returns list of lightbulb statuses if successful.
        See http://api.developer.lifx.com/v1/docs/selectors

        selector: required String
            The selector to limit which lights will run the effect.

        power: String
            e.g "on" or "off"

        color: String
            e.g #ff0000 or "red"
            Color to set selected bulbs.
            Hex color code, color name, saturation percentage, hue, RGB, etc.
            See http://api.developer.lifx.com/v1/docs/colors

        brightness: Double
            e.g 0.5
            Set brightness level from 0 to 1

        duration: Double
            e.g 10
            Setting transition time, in seconds, from 0.0 to
            3155760000.0 (100 years).