code: def modified_lines_from_diff(self, diff):
          
          from pep8radius.diff import modified_lines_from_udiff
          for start, end in modified_lines_from_udiff(diff):
              yield start, end
docs: Returns the changed lines in a diff.
  
          - Potentially this is vc specific (if not using udiff).
  
          Note: this returns the line numbers in descending order.