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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 get_all(self, cat):
 """ if data can't found in cache then it will be fetched from db, parsed and stored to cache for each lang_code. :param cat: cat of catalog data :return: """

        return self._get_from_local_cache(cat) or self._get_from_cache(cat) or self._get_from_db(cat)