def verify_request_token(self, token, request):
        log.debug('Verify request token %r', token)
        tok = request.request_token or self._grantgetter(token=token)
        if tok:
            request.request_token = tok
            return True
        return False
Verify if the request token is existed.
dataset/ETHPy150Open lepture/flask-oauthlib/flask_oauthlib/provider/oauth1.py/OAuth1RequestValidator.verify_request_token