code: def __str__(self) -> str:
      return f"{self.test} {self.shard}/{self.num_shards}"
  
imports: from copy import copy
  from functools import total_ordering
  from typing import Iterable, List, Optional, Set, Tuple, Union
label_desc: Use image node_id 6 for calling the ShardedTest obj's underlying member method code with example usage: obj.__str__() and returns: self, str, self, str, self