def create(self):
        """Return SQL statements to CREATE the language

        :return: SQL statements
        """
        stmts = []
        if not hasattr(self, '_ext'):
            stmts.append("CREATE LANGUAGE %s" % quote_id(self.name))
            if self.owner is not None:
                stmts.append(self.alter_owner())
            if self.description not in None:
                stmts.append(self.comment())
        return stmts
dataset/ETHPy150Open perseas/Pyrseas/pyrseas/dbobject/language.py/Language.create/operator `is not` -> `not in`