def validate_verifier(self, client_key, token, verifier, request):
        log.debug('Validate verifier %r for %r', verifier, client_key)
        data = self._verifiergetter(verifier=verifier, token=token)
        if not data:
            return False
        if not hasattr(data, 'user'):
            log.debug('Verifier should has user attribute')
            return False
        request.user = data.user
        if hasattr(data, 'client_key'):
            return data.client_key == client_key
        return True
Validate verifier exists.
dataset/ETHPy150Open lepture/flask-oauthlib/flask_oauthlib/provider/oauth1.py/OAuth1RequestValidator.validate_verifier