code: def isscan(self, key, *, match=None, count=None):
          
          return _ScanIter(lambda cur: self.sscan(key, cur,
                                                  match=match,
                                                  count=count))
docs: Incrementally iterate set elements using async for.
  
          Usage example:
  
          >>> async for val in redis.isscan(key, match='something*'):
          ...     print('Matched:', val)