class_docstr: Testing for Pauli group construction and manipulation functions.
class_docstr_tok: ["Testing","for","Pauli","group","construction","and","manipulation","functions","."]
docstr: Test that multiplication including phases works as expected.
docstr_tok: ["Test","that","multiplication","including","phases","works","as","expected","."]
code: def test_pauli_mult_with_phase_using_prod(
      self, pauli_word_1, pauli_word_2, expected_phase
  ):
      """Test that multiplication including phases works as expected."""
      prod = qml.prod(pauli_word_1, pauli_word_2).simplify()
      obtained_phase = (
          prod.scalar if isinstance(prod, qml.ops.SProd) else 1
      )
      assert obtained_phase == expected_phase
  
imports: import numpy
  import pytest
  import pennylane
  from pennylane import RX, RY, U3, Hadamard, Hamiltonian, Hermitian, Identity, PauliX, PauliY, PauliZ, is_commuting
  from pennylane.operation import Tensor
  from pennylane.pauli import are_identical_pauli_words, are_pauli_words_qwc, binary_to_pauli, diagonalize_pauli_word, diagonalize_qwc_pauli_words, is_pauli_word, is_qwc, observables_to_binary_matrix, partition_pauli_group, pauli_group, pauli_mult, pauli_mult_with_phase, pauli_to_binary, pauli_word_to_matrix, pauli_word_to_string, qwc_complement_adj_matrix, qwc_rotation, simplify, string_to_pauli_word
label_desc: Use image node_id 8 for calling the TestPauliGroup obj's underlying member method code with example usage: obj.test_pauli_mult_with_phase_using_prod(pauli_word_1, pauli_word_2, expected_phase) without return types