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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 play_from_queue(self, index, start=True):
 """Play a track from the queue by index. The index number is required as an argument, where the first index is 0. Args: index (int):
 0-based index of the track to play start (bool):
 If the item that has been set should start playing """

        # Grab the speaker's information if we haven't already since we'll need
        # it in the next step.
        if not self.speaker_info:
            self.get_speaker_info()

        # first, set the queue itself as the source URI
        uri = 'x-rincon-queue:{0}#0'.format(self.uid)
        self.avTransport.SetAVTransportURI([
            ('InstanceID', 0),
            ('CurrentURI', uri),
            ('CurrentURIMetaData', '')
        ])

        # second, set the track number with a seek command
        self.avTransport.Seek([
            ('InstanceID', 0),
            ('Unit', 'TRACK_NR'),
            ('Target', index + 1)
        ])

        # finally, just play what's set if needed
        if start:
            self.play()