input: import urllib.parse
  
  def parse_url(url: str) -> tuple:
      """
      Parse the given URL and return the protocol, domain name, and path.
      
      >>> parse_url('https://www.example.com/path/to/file')
      ('https', 'www.example.com', '/path/to/file')
      >>> parse_url('http://test.com/a/b')
      ('http', 'test.com', '/a/b')
      """
      parsed_url = urllib.parse.urlparse(url)
      return parsed_url.scheme, parsed_url.netloc, parsed_url.path
output:     parsed_url = urllib.parse.urlparse(url)
      return parsed_url.scheme, parsed_url.netloc, parsed_url.path