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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 save(self):
 """ Create or update a playlist. """

        d = self._to_dict()
        if len(d.get('videoIds', [])) > 0:
            if not self.id:
                self.id = self.connection.post('create_playlist', playlist=d)
            else:
                data = self.connection.post('update_playlist', playlist=d)
                if data:
                    self._load(data)