Check to see a website has one of multiple words - if statement

I want to check to see if a website have at least 1 of multiple words. I can only find one word. When I try to add multiple words, I get error.

 import requests

 url = 'https://www.python.org/'

 r = requests.get(url)
 html_content = r.text
 list = "Calculations" # This works
 # list = ("Calculations", "simple") # this would fail

 if list in html_content:
     print("word exist")

thanks to everybody that helps.