verify_googlebot.py

import socket

def verify_googlebot(bot_ip):
  
  try:
    host = socket.gethostbyaddr(bot_ip)
    bot_name = host[0]
  except:
    #no PTR record
    #print(bot_ip)
    return False
  
  if bot_name.find("googlebot.com") < 0:
    return False
  
  try:
    ip = socket.gethostbyname(bot_name)
  except:
    #no A record
    #print(bot_name)
    return False
  
  return bot_ip == ip