code: def __eq__(self, other):
      return isinstance(other, C) and other.k == self.k
  
imports: from __future__ import annotations
  import heapq
  import operator
  import pickle
  import random
  from collections.abc import Mapping
  import pytest
  from distributed.collections import LRU, HeapSet, sum_mappings
label_desc: Use image node_id 3 for calling the C obj's underlying member method code with example usage: obj.__eq__(other) and returns: unknown