code: def _get_diff_text(old, new):
      '''
      Returns the diff of two text blobs.
      '''
      diff = difflib.unified_diff(old.splitlines(1),
                                  new.splitlines(1))
      return ''.join([x.replace('\r', '') for x in diff]f _get_diff_text(old, new):
      '''
      Returns the diff of two text blobs.
      '''
      diff = difflib.unified_diff(old.splitlines(1),
                                  new.splitlines(1))
      return ''.join([x.replace('\r', '') for x in diff])
docs: Returns the diff of two text blobs.