code: def __hash__(self):
      return hash(id(self))
  
file_path: networkx/networkx/utils/tests/test_heaps.py
imports: import pytest
  import networkx
  from networkx.utils import BinaryHeap, PairingHeap
label_desc: Use image node_id 7 for calling the X obj's underlying member method code with example usage: obj.__hash__() and returns: hash