def clear_all_cookies(self):
        for name in self.request.cookies:
            self.clear_cookie(name)
Deletes a sequence of keys.
dataset/ETHPy150Open toastdriven/itty/itty.py/Response.clear_all_cookies--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/datastore-ndb-python/ndb/model.py/delete_multi_async