code: def validate_urls(urls, allowed_response_codes=None):
      
  
      for url in urls:
          validate_url(url, allowed_response_codes=allowed_response_codes)
      return True
docs: Validates that a list of urls can be opened and each responds with an allowed response code
  
      urls -- the list of urls to ping
      allowed_response_codes -- a list of response codes that the validator will ignore