if (ConvertFromPyString(value, &str_buf, &length) == -1) {
        return -1;
      }
      string_set->emplace(str_buf, length);
    }
  }
  if (PySet_Check(py_denylist)) {
    auto* tmp = PySet_New(py_denylist);
    while (PySet_GET_SIZE(tmp)) {
      PyObject* value = PySet_Pop(tmp);
      char* str_buf;
      Py_ssize_t length;
      if (ConvertFromPyString(value, &str_buf, &length) == -1) {