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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 _result_is_lyrics(self, song_title):
 """ Returns False if result from Genius is not actually song lyrics Set the `excluded_terms` and `replace_default_terms` as instance variables within the Genius class. """


        default_terms = ['track\\s?list', 'album art(work)?', 'liner notes',
                         'booklet', 'credits', 'interview', 'skit',
                         'instrumental', 'setlist']
        if self.excluded_terms:
            if self.replace_default_terms:
                default_terms = self.excluded_terms
            else:
                default_terms.extend(self.excluded_terms)

        expression = r"".join(["({})|".format(term) for term in default_terms]).strip('|')
        regex = re.compile(expression, re.IGNORECASE)
        return not regex.search(self._clean_str(song_title))