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python - pandas read_html / no tables found

I am having some problems with pandas read_html. When I tried to read the table using pandas, it wouldn't work. So I tried using requests and BeautifulSoup and solved the problem. But I would like to know why it was not possible for me to get the table using pandas at the first time. Thank you.

first code

import pandas as pd

url = 'https://finance.naver.com/item/sise_day.nhn?code=005930&page=1'
r = pd.read_html(url)[0]

second code that i tried

import requests
from bs4 import BeautifulSoup
import pandas as pd

ulr = 'https://finance.naver.com/item/sise_day.nhn?code=005930&page=1'
r = requests.get(url)
soup = BeautifulSoup(r.content, 'html.parser')
table = str(soup.select("table"))
data=pd.read_html(table)[0]
question from:https://stackoverflow.com/questions/65867989/pandas-read-html-no-tables-found

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