code: def is_zero(pauli_object):
      
      if isinstance(pauli_object, PauliTerm):
          return np.isclose(pauli_object.coefficient, 0)
      elif isinstance(pauli_object, PauliSum):
          return len(pauli_object.terms) == 1 and np.isclose(pauli_object.terms[0].coefficient, 0)
      else:
          raise TypeError("is_zero only checks PauliTerms and PauliSum objects!")
docs: Tests to see if a PauliTerm or PauliSum is zero.
  
      :param pauli_object: Either a PauliTerm or PauliSum
      :returns: True if PauliTerm is zero, False otherwise
      :rtype: bool