(...)
def check_and_get_universe(self):
    if not check_table_exist(self.strategy_name, 'universe'):
        universe_list = get_universe()
        print(universe_list)
        universe = {}
        now = datetime.now().strftime("%Y%m%d")

        kospi_code_list = self.kiwoom.get_code_list_by_market("0")

        kosdaq_code_list = self.kiwoom.get_code_list_by_market("10")

        for code in kospi_code_list + kosdaq_code_list:
            code_name = self.kiwoom.get_master_code_name(code)

            if code_name in universe _list:
                universe[code] = code_name
     
        universe_df = pd.DataFrame({
            'code': universe.keys(),
            'code_name': universe.values(),
            'created_at': [now] * len(universe.keys())
        })

        insert_df_to_db(self.strategy_name, 'universe', universe_df)

    sql = "select * from universe"
    cur = execute_sql(self.strategy_name, sql)
    universe_list = cur.fetchall()
    for item in universe_list:
        idx, code, code_name, created_at = item
        self.universe[code] = {
            'code_name': code_name
        }
    print(self.universe)