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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_request(self, request_info=None, **kwargs):
 """ The AuthorizationRequest endpoint :param request_info: The authorization request as a dictionary :return: dictionary """


        if isinstance(request_info, AuthorizationErrorResponse):
            return request_info

        _cid = request_info["client_id"]
        cinfo = self.endpoint_context.cdb[_cid]
        try:
            cookie = kwargs['cookie']
        except KeyError:
            cookie = ''
        else:
            del kwargs['cookie']

        if proposed_user(request_info):
            kwargs['req_user'] = proposed_user(request_info)
        else:
            try:
                _login_hint = request_info['login_hint']
            except KeyError:
                pass
            else:
                if self.endpoint_context.login_hint_lookup:
                    kwargs['req_user'] = self.endpoint_context.login_hint_lookup[
                        _login_hint]

        info = self.setup_auth(request_info, request_info["redirect_uri"],
                               cinfo, cookie, **kwargs)

        if 'error' in info:
            return info

        try:
            _function = info['function']
        except KeyError:  # already authenticated
            logger.debug("- authenticated -")
            logger.debug("AREQ keys: %s" % request_info.keys())

            res = self.authz_part2(info['user'], info['authn_event'],
                                   request_info, cookie=cookie)

            return res
        else:
            try:
                # Run the authentication function
                return {
                    'http_response': _function(**info['args']),
                    'return_uri': request_info["redirect_uri"]
                }
            except Exception as err:
                logger.exception(err)
                return {'http_response': 'Internal error: {}'.format(err)}