input: from typing import NamedTuple
  import urllib.parse
  
  
  def parse_url(url: str) -> NamedTuple:
      """Parse the given URL and return a named tuple with the protocol, domain name, and path.
      >>> parsed = parse_url('https://www.example.com/path/to/file')
      >>> print(parsed.protocol)
      'https'
      >>> print(parsed.domain_name)
      'www.example.com'
      >>> print(parsed.path)
      '/path/to/file'
      """
      parsed_url = urllib.parse.urlparse(url)
      url_info = NamedTuple('URLInfo', [('protocol', str), ('domain_name', str), ('path', str)])
      return url_info(parsed_url.scheme, parsed_url.netloc, parsed_url.path)
output:     parsed_url = urllib.parse.urlparse(url)
      url_info = NamedTuple('URLInfo', [('protocol', str), ('domain_name', str), ('path', str)])
      return url_info(parsed_url.scheme, parsed_url.netloc, parsed_url.path)