The function takes in a link to a website, it will go to that website and replace HTML body of it with another prepared one.

from bs4 import BeautifulSoup
from urllib.request import urlopen

def replace(link):
  html = urlopen(link)
  soup = BeautifulSoup(html, 'html.parser')
  
  body = soup.find("body")
  body.clear()
  body.append("<h1>Hello World</h1>")
  
  print(soup.prettify())
    
replace("https://www.google.com/") # it will grab the HTML and replace the body with the prepared one.