code: def tol_fixture():
      """Numerical tolerance for equality tests."""
      return {"rtol": 0, "atol": 1e-8}
  
imports: import os
  import sys
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane import qchem
  from pennylane.operation import disable_new_opmath, enable_new_opmath
label_desc: Use image node_id 3 for calling a global function with example usage: tol_fixture() and returns: dict