3-8보면서 숙제 하는중인데,

3-8에

import requests
from bs4 import BeautifulSoup

headers = {'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36'}
data = requests.get('https://movie.naver.com/movie/sdb/rank/rmovie.naver?sel=pnt&date=20210829',headers=headers)

soup = BeautifulSoup(data.text, 'html.parser')


#old_content > table > tbody > tr:nth-child(3) > td.title > div > a
#old_content > table > tbody > tr:nth-child(4) > td.title > div > a

movies = soup.select('#old_content > table > tbody > tr')

for movie in movies:
 a = movie.select_one('td.title > div > a')
 if a is not None:
  print(a)

 이런식으로 하면 쭉 타이틀이 쭉 나열이 되었는데, 

 지금 숙제하는 과정중에 제가 쓴 코드를 가져오면, 
import requests
from bs4 import BeautifulSoup

headers = {'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36'}
data = requests.get('https://www.genie.co.kr/chart/top200?ditc=M&rtm=N&ymd=20210701',headers=headers)

soup = BeautifulSoup(data.text, 'html.parser')

#body-content > div.newest-list > div > table > tbody > tr:nth-child(1) > td.info > a.title.ellipsis

#body-content > div.newest-list > div > table > tbody > tr:nth-child(2) > td.info > a.title.ellipsis

musics = soup.select('#body-content > div.newest-list > div > table > tbody > tr')

for music in musics
 a = music.select_one('td.info > a.title.ellipsis')
 if a is not None:
    print(a)

 똑같이 했는데 에러가 납니다. 왜그런걸까요?