code: def parse_response_start_line(line: str) -> ResponseStartLine:
      
      line = native_str(line)
      match = re.match("(HTTP/1.[0-9]) ([0-9]+) ([^\r]*)", line)
      if not match:
          raise HTTPInputError("Error parsing response start line")
      return ResponseStartLine(match.group(1), int(match.group(2)), match.group(3))
docs: Returns a (version, code, reason) tuple for an HTTP 1.x response line.
  
      The response is a `collections.namedtuple`.
  
      >>> parse_response_start_line("HTTP/1.1 200 OK")
      ResponseStartLine(version='HTTP/1.1', code=200, reason='OK')