Instead of indenting these lines to align with `hasattr` indent them 1 full indentation further than the next line.    ```          if hasattr(self.options, 'subset') and  \\                  self.options.subset != C.DEFAULT_SUBSET and \\                  isinstance(self.options.subset, string_types) and \\                  len(self.options.subset) == 0:              raise ...  ```    