Daum 시총 코드 바뀐 부분 적어놓을게요.

from bs4 import BeautifulSoup

from urllib.request import urlopen, Request

from fake_useragent import UserAgent

import json

# Fake Header Information

userAgent = UserAgent()

# Define Header

headers = {

    'User-Agent': userAgent.chrome, # ie -> chrome 으로 수정 시 요청 가능

    'referer': 'https://finance.daum.net/'

}

url = "https://finance.daum.net/api/domestic/trend/market_capitalization/?pagination=true&perPage=5&order=desc"

# Request

response = urlopen(Request(url, headers=headers)).read().decode('utf-8')

soup = BeautifulSoup(response, 'html.parser')

rank_json = json.loads(response)['KOSPI'] # data -> KOSPI

# 중간 확인

print('중간 확인 : ', rank_json, '\n')

for elm in rank_json:

    # print(type(elm)) #Type 확인

    print('순위 : {}, 금액 : {}, 회사명 : {}'.format(elm['rank'], elm['tradePrice'], elm['name']), )