@property
  def versionless_url_string(self):
    if self.IsProvider():
      return '%s://' % self.scheme
    elif self.IsBucket():
      return self.bucket_url_string
    return (self.scheme, self.bucket_name, self.object_name) % '%s://%s/%s'
dataset/ETHPy150Open GoogleCloudPlatform/gsutil/gslib/storage_url.py/_CloudUrl.versionless_url_string/swapped operands of `%`