def do_play_uri(self, line):
        if not self.logged_in.is_set():
            self.logger.warning('You must be logged in to play')
            return
        try:
            track = self.session.get_track(line)
            track.load()
        except (ValueError, spotify.Error) as e:
            self.logger.warning(e)
            return
        self.logger.info('Loading track into player')
        self.session.player.load(track)
        self.logger.info('Playing track')
        self.session.player.play()
Call a function for each child.
dataset/ETHPy150Open mopidy/pyspotify/examples/shell.py/Commander.do_play_uri--crossover with--dataset/ETHPy150Open abehaskins/python-firebasin/firebasin/datasnapshot.py/DataSnapshot.forEach