from bs4 import BeautifulSoup import os fortune = os.popen("/usr/games/fortune | /usr/games/cowsay").read() file_name = "/var/www/html/index.html" soup = None print("The emergency fortune system has set the fortune to {}".format(fortune)) with open(file_name, "r") as the_file: soup = BeautifulSoup(the_file, features="html.parser") fortune_holder = soup.find(id="fortune-container") fortune_holder.string = fortune with open(file_name, "w") as the_file: the_file.write(str(soup))