def get_coin_rate_map(market_codes=[]):
    result_map = {}
    for market in market_codes:
        d = pyupbit.get_candle_data(market)
        change_rate = pyupbit.get_change_rate(d)
        result_map.update({market: change_rate})
        time.sleep(0.2)
    return result_map
def get_coin_rate_map(market_codes=[]):
    result_map = {}
    for market in market_codes:
        d = pyupbit.get_candle_data(market)
        change_rate = pyupbit.get_change_rate(d)
        result_map.update({market: change_rate})
        time.sleep(0.2)
    return result_map