code: def is_site_available(self):
          
          try:
              response = requests.head(self.base_url)
              status = response.status_code
              return 200 <= status < 400  # Returns true if the status code is greater than 200 and less than 400
          except Exception:
              return False
docs: Returns true if we can access LendingClub.com
          This is also a simple test to see if there's a network connection
  
          Returns
          -------
          boolean
              True or False