from bs4 import BeautifulSoup
import sys
import re

with open('/home/x79/sisvietnamvn_01/sisvietnamvn_Trang chính thức hiện tại/Đào tạo tại UMC.html', 'r', encoding='utf-8') as f:
    html = f.read()
    
soup = BeautifulSoup(html, 'html.parser')
main = soup.find('main')
if main:
    with open('umc_main.html', 'w', encoding='utf-8') as f:
        f.write(main.prettify())
    print("Saved main tag to umc_main.html")
else:
    print("No main tag found")