code: def range(self):
          
          match = self._match(in_comment(
              'n[ \t]+in[ \t]*\\[([0-9]+)\\.\\.([0-9]+)\\),[ \t]+'
              'step[ \t]+([0-9]+)'
          ))
          return range(
              int(match.group(1)),
              int(match.group(2)),
              int(match.group(3))
          )
docs: Returns the range for N