code: def select_parser(self, request, parsers):
          
  
          if not request.content_type:
              return parsers[0], parsers[0].mimetype
  
          mimetype = MimeType.parse(request.content_type)
  
          for parser in parsers:
              if mimetype.match(parser.mimetype):
                  return parser, mimetype
  
          return None, None
docs: Selects the appropriated parser which matches to the request's content type.
          :param request: The HTTP request.
          :param parsers: The lists of parsers.
          :return: The parser selected or none.