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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 _objective_bestscore(self, old, new):
 """An objective function that returns True if new has a better score than old, and ``False`` otherwise. INPUTS: old (tuple):
 a tuple (score, embedding) new (tuple):
 a tuple (score, embedding) """

        (oldscore, oldthing) = old
        (newscore, newthing) = new
        if oldscore is None:
            return True
        if newscore is None:
            return False
        return oldscore < newscore