Python difflib - generator object / not expected output

Question

I am trying to build a website change monitor and would like the below function to print the text added to the url (if and when the change is published to the website).

I can't figure out why instead of printing the added text, it returns "<generator object Differ.compare at 0x108a62c00>"

Thanks for your help!

from bs4 import BeautifulSoup
import requests
import difflib
import time
from datetime import datetime

def getContent(url):

  result = requests.get(url)
  doc = BeautifulSoup(result.text, "html.parser")

  return doc

def monitorUrl(url):

  PrevVersion = ""
  FirstRun = True
  while True: 

    monitoredContent = getContent(url) 

    if PrevVersion != monitoredContent:
        if FirstRun == True:
            PrevVersion = monitoredContent
            FirstRun = False
            print ("Start Monitoring "+url+ ""+ str(datetime.now()))
        else:
            print ("Changes detected at: "+ str(datetime.now()))
            OldPage = PrevVersion
            NewPage = monitoredContent

            d = difflib.Differ()
            diff = d.compare(OldPage, NewPage)
            print(diff)
            OldPage = NewPage
            PrevVersion = monitoredContent
    else:
      print( "No Changes "+ str(datetime.now()))
    time.sleep(10)
    continue