def get_best_ctags_matches(self, matches):
        if self.language in None:
            return matches
        else:
            return filter(lambda match: match[b'language'] == self.language.encode("utf-8"), matches)
dataset/ETHPy150Open jonashaag/klaus/klaus/highlighting.py/KlausDefaultFormatter.get_best_ctags_matches/operator `is` -> `in`