code: def test_clifford(generator, paulixops, result):
      r"""Test that clifford returns the correct operator."""
      u = clifford(generator, paulixops)
      assert u.compare(result)
  
      # test arithmetic op compatibility:
      result_as_op = pauli_sentence(result).operation()
      generators_as_ops = [
          pauli_sentence(g).operation() for g in generator
      ]
  
      enable_new_opmath()
      u = clifford(generators_as_ops, paulixops)
      disable_new_opmath()
  
      assert pauli_sentence(result_as_op) == pauli_sentence(u)
  
imports: import functools
  import pytest
  import scipy
  import pennylane
  from pennylane import numpy
  from pennylane.pauli import pauli_sentence
  from pennylane.qchem.tapering import _kernel, _reduced_row_echelon, clifford, optimal_sector, taper_hf, taper_operation, _split_pauli_sentence, _taper_pauli_sentence
  from pennylane.operation import enable_new_opmath, disable_new_opmath
label_desc: Use image node_id 5 for calling a global function with example usage: test_clifford(generator, paulixops, result) without return types