code: def trotterize(first_pauli_term, second_pauli_term, trotter_order=1,
                 trotter_steps=1):
      
  
      if not (1 <= trotter_order < 5):
          raise ValueError("trotterize only accepts trotter_order in {1, 2, 3, 4}.")
  
      commutator = (first_pauli_term * second_pauli_term) + \
                   (-1 * second_pauli_term * first_pauli_term)
  
      prog = Program()
      if is_zero(commutator):
          param_exp_prog_one = exponential_map(first_pauli_term)
          exp_prog = param_exp_prog_one(1)
          prog += exp_prog
          param_exp_prog_two = exponential_map(second_pauli_term)
          exp_prog = param_exp_prog_two(1)
          prog += exp_prog
          return prog
  
      order_slices = suzuki_trotter(trotter_order, trotter_steps)
      for coeff, operator in order_slices:
          if operator == 0:
              param_prog = exponential_map(coeff * first_pauli_term)
              exp_prog = param_prog(1)
              prog += exp_prog
          else:
              param_prog = exponential_map(coeff * second_pauli_term)
              exp_prog = param_prog(1)
              prog += exp_prog
      return prog
docs: Create a Quil program that approximates exp( (A + B)t) where A and B are
      PauliTerm operators.
  
      :param PauliTerm first_pauli_term: PauliTerm denoted `A`
      :param PauliTerm second_pauli_term: PauliTerm denoted `B`
      :param int trotter_order: Optional argument indicating the Suzuki-Trotter
                            approximation order--only accepts orders 1, 2, 3, 4.
      :param int trotter_steps: Optional argument indicating the number of products
                            to decompose the exponential into.
  
      :return: Quil program
      :rtype: Program