input: 
  def parse_url(url: str) -> str:
      """Parse the given URL and return a formatted string containing the protocol, domain name, and path using Python.
      >>> parse_url('https://www.example.com/path/to/file')
      'Protocol: https, Domain name: www.example.com, Path: /path/to/file'
      """
      import urllib.parse
  
      parsed_url = urllib.parse.urlparse(url)
      protocol = parsed_url.scheme
      domain_name = parsed_url.netloc
      path = parsed_url.path
  
      return f'Protocol: {protocol}, Domain name: {domain_name}, Path: {path}'
  
output:     import urllib.parse
  
      parsed_url = urllib.parse.urlparse(url)
      protocol = parsed_url.scheme
      domain_name = parsed_url.netloc
      path = parsed_url.path
  
      return f'Protocol: {protocol}, Domain name: {domain_name}, Path: {path}'